Abelardo Vegetti

Abelardo Vegetti
Universidad Nacional del Litoral | UNL · Faculty of Agricultural Sciences FCA

About

105
Publications
16,118
Reads
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1,155
Citations
Citations since 2017
9 Research Items
487 Citations
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
Introduction

Publications

Publications (105)
Article
Full-text available
Background and aims: Commelina erecta and Eutsachys retusa are two perennial weeds, which show high resprouting after glyphosate application. This behavior represents a serious problem for weed management. The purpose of this study was to characterize the bud bank of both species and to assess their response to glyphosate application. M&M: We anal...
Article
Inflorescence morphology in Poaceae subtribes Hilariinae, Monanthochloinae, Boutelouinae, Scleropogoninae and Muhlenbergiinae (Cynodonteae, Chloridoideae) has been revisited recently, but inflorescence development remains largely unexplored. The aim of this study is to contribute additional information on the development of inflorescences in Cynodo...
Article
Full-text available
Previous molecular phylogenetic analyses of the family Cyperaceae based on rbcL sequences showed Bulbostylis as paraphyletic, with B. atrosanguinea and B. hispidula forming a clade with Nemum spadiceum. On the contrary, phylogenetic analyses of the tribe Abildgaardieae based on nuclear (ITS ribosomal region) and plastid sequences (trnL-F region) sh...
Article
Full-text available
Objectives: Mechanical impedance causes structural changes in roots. Nevertheless, little is known about the changes in soybean root systems grown under compacted soils (mechanical impedance). The aim of this work was to understand the morphological and topological-architectural changes occurred in plants root system of soybean grown under soil com...
Article
The species of the Cynodonteae tribe show great morphological diversity in their reproductive structures. Previous studies where inflorescences were comparatively analysed in the context of phylogeny have shown that although grass inflorescences seem to be excessively variable, there are certain aspects of inflorescences that store relevant informa...
Article
This review is intended: (1) to interpret and characterize morphological variations observed in the structure of the enrichment axes, located below the terminal inflorescence in Poaceae; and (2) to study the relationship between the intensity of development of such axes and the size of terminal inflorescence. An important reduction in the developme...
Article
Full-text available
Cytosolic glyceraldehyde-3-phosphate dehydrogenase (NAD-GAPDH) is involved in a critical energetic step of glycolysis and also has many important functions besides its enzymatic activity. The recombinant wheat NAD-GAPDH was phosphorylated in vitro at Ser205 by a SNF1-Related protein kinase 1 (SnRK1) from wheat heterotrophic (but not from photosynth...
Article
Jouvea is a dioecious genus of grasses with two species. Molecular phylogenetic analyses place it in tribe Cynodonteae, closely related to subtribes Hilariinae and Scleropogoninae, and the genera Allolepis and Sohnsia. The staminate inflorescence in Jouvea is an ordinary grass spike of spikelets, but the pistillate inflorescence is represented by a...
Article
We studied the inflorescences of 112 members of tribe Chloridoideae subtribe Eleusininae from a morphological and evolutionary perspective to identify the most frequent types and to explore the evolutionary history of selected inflorescence associated characters. Six characters were scored on adult specimens and a principal coordinate analysis was...
Poster
Full-text available
BdiRCN4 regulates meristem fate in Brachypodium distachyon Machado, R., Muchut, S., Reutemann, A., Vegetti, A, Uberti Manassero, N. Departamento de Biología Vegetal, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral Palabras clave: meristem regulation, TFL1 homologues, Brachypodium In higher plants, a phase transition from vegetative...
Article
This work presents an analysis of the homogenization and truncation processes in Cyperaceae inflorescences. The truncation process is rare in Cyperaceae. There may be homogenized inflorescences but in general these inflorescences present a terminal spikelet. In the few studied cases of truncated inflorescences in Cyperaceae the truncation process m...
Article
Full-text available
This work provides an analysis of the spikelet structure in Cypereae, and their taxonomic and phylogenetic implications. The main variations in the Cypereae spikelets are seem in: number and phyllotaxis of the glumes, presence/absence of empty glumes, glume morphology, rachilla internode length, prophyll development, flower structure and structure...
Article
Full-text available
The Poaceae is one of the most important Angiosperm families, in terms of morphological diversity, ecology and economic importance. Species within this family show a very wide variation in terms of salinity tolerance. Salt secretion through salt glands plays a significant role in regulating ion balance, contributing to salinity tolerance. This revi...
Article
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This paper aims to interpret and characterize the inflorescence of Koyamaeae tribe from the typological point of view in order to establish homologies and promote comparative studies and the use of inflorescence characters in future phylogenetic studies. The Koyamaeae tribe is comprised of one monotypic Koyamaea W. Thomas & Davidse genus, with K. n...
Poster
Full-text available
Finding master molecular regulators of inflorescence architecture in Brachypodium distachyon Uberti Manassero NG1, Vegetti, A1, Reinheimer R2. 1 Cat. de Biología Celular – Facultad de Ciencias Agrarias – UNL 2 Instituto de Botánica Darwinion Grasses produce florets on a structure called a spikelet, and variation in the number and arrangement of bot...
Article
Full-text available
This work analyzes growth forms in V. persica and P. debilis, in order to identify their structural development under undisturbed conditions. Branching systems of shoots and their temporal and spatial variation, several structural and developmental features as well as growth direction and foliar sequence were studied in plants grown from seed in gr...
Article
Full-text available
Mesquite (Prosopis alba Grisebach), an important species in arid and semiarid regions, is currently commercially propagated by seeds and so there is great interest in developing techniques for species propagation, domestication and improvement. Cloning through mini-cuttings is a new and promising technique for the production of clonal seedlings of...
Article
This work analyzes growth forms in V. persica and P. debilis, in order to identify their structural development under undisturbed conditions. Branching systems of shoots and their temporal and spatial variation, several structural and developmental features as well as growth direction and foliar sequence were studied in plants grown from seed in gr...
Article
Full-text available
A group of sunflower lines that exhibit a range of leaf Na(+) concentrations under high salinity was used to explore whether the responses to the osmotic and ionic components of salinity can be distinguished in leaf expansion kinetics analysis. It was expected that at the initial stages of the salt treatment, leaf expansion kinetics changes would b...
Article
Full-text available
Premise of research. Rhynchospora, one of the biggest genera of sedges, displays several spikelet and flower modifications and is one of a few genera where the pollination strategy changes from wind to insect pollination; however, the mechanisms that have promoted such diversity in the genus are unknown. We have performed a comparative study of spi...
Article
Background and Aims Inflorescence forms of panicoid grasses (Panicoideae s.s.) are remarkably diverse and they look very labile to human eyes; however, when performing a close inspection one can identify just a small subset of inflorescence types among a huge morphospace of possibilities. Consequently, some evolutionary constraints have restricted,...
Article
Full-text available
In southern South America, Andropogon sect. Leptopogon is represented by both diploid and hexaploid species. In order to compare the synflorescence structures and floral arrays in relation to ploidy levels in species of Andropogon, the section Leptopogon was used as model. In this study, the synflorescence structure was typologically characterized....
Article
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Sunflower (Helianthus annuus L.) has been rated as moderately salt-resistant, and variability for salt resistance has been detected within this crop. However, variability in salt-resistance mechanisms has not been assessed. Osmotic tolerance, the relation of salt resistance with whole-plant Na+ and K+ distribution and tissue Na+ tolerance were inve...
Article
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Premise of the study: The understanding of homoplasic structures becomes more relevant when they are complex and define large angiosperm taxa. Inflorescence architecture usually fulfills both features, as happens with Cyperus, a genus with two taxonomical subdivisions characterized either by alternative expressions of Kranz anatomy (C(3) or C(4))...
Article
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This work presents the basics for interpreting the adult inflorescence structure in Cyperaceae. It provides an analysis of the variations of the synflorescence and inflorescence structure in the family. Three types of synflorescence may be recognized in this family: a synflorescence with a foliate stem, a terminal inflorescence and a variable numbe...
Article
Inflorescence forms can be described by different combinatorial patterns of meristem fates (indeterminate versus determinate). In theory, the model predicts that any combination is possible. Whether this is true for grasses is unknown. In this paper, the subfamily Panicoideae s.s. (panicoid grasses) was chosen as the model group to investigate this...
Article
The Abildgaardieae tribe within the family Cyperaceae comprises six or seven genera, among which Abildgaardia, Bulbostylis and Fimbristylis pose a challenge regarding their morphological delimitation. Molecular phylogenetic analyses including species of Abildgaardieae are rare, but in most of those studies, Abildgaardia and Fimbristylis appear as m...
Article
We investigated the inflorescence structure of Rhynchospora following the methodology and terminology of Troll's school, with the objective of providing a characterization of the inflorescence suitable to evaluate the processes responsible for the diversity observed. Homogenization of inflorescence structures may occur fully or partially. In the fi...
Article
Full-text available
The function of the class I TCP transcription factor TCP15 from Arabidopsis thaliana has been studied through the analysis of plants that express a fusion of this protein to the EAR repressor domain. Constitutive expression of TCP15-EAR produces growth arrest at the seedling stage, before leaf emergence. Expression of the repressor fusion from the...
Conference Paper
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The synflorescences in the Andropogon lateralis complex are typologically characterized, with this complex being composed of five species in the southern area of South America (Argentina, Brazil, Paraguay, Bolivia and Uruguay). We based our analysis on the typology system developed by Troll and Weberling, which has proved useful in describing inflo...
Article
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Historically, Pappophoreae included the genera Cottea, Enneapogon, Kaokochloa, Pappophorum and Schmidtia. Some authors consider this tribe as a well-supported monophyletic group; while other evidences reveals Pappophoreae as polyphyletic, with Pappophorum separated from the rest of the tribe. When the latter happens, it can form a clade with Triden...
Article
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The architecture of the shoot branching system in Poaceae defines the growth forms within this family. The specific characteristics of the main axis as well as the disposition and characteristics of the lateral shoots determine the main structural variations found among species. In this work, we discuss the set of parameters to be taken into accoun...
Article
The structure of the synflorescence and the flowering unit (inflorescence) in Commelinaceae are characterized. The synflorescence is polytelic and the basic inflorescence type is a terminal pedunculate thyrse with an indeterminate central axis to which several to many cincinni are attached. Each thyrse is a florescence, and each cincinnus is a part...
Article
The architecture of the branching system in species of Pappophoreae (Poaceae) has not been studied in detail. This work covers the spatial and temporal variation of the shoot system in species of Cottea, Enneapogon, Kaokochloa, Pappophorum and Schmidtia (Pappophoreae). Growth form variation of the species of Pappophoreae is related to the different...
Article
Full-text available
Plant soil compaction poses a serious problem to agriculture because it produces different types of changes in plant characteristics. No method has been implemented to date to use root morphological changes as indicators of soil compaction levels. Therefore, the aim of the present study was to evaluate whether or not the morphological changes in ro...
Article
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The anatomy of the underground branching systems in Cyperus corymbosus Rottb. var. subnodosus (Nees et Meyen) Kük. was examined. The anatomy of the rhizome and tuber of this taxon. A comparative analysis of the variations observed in different development stages was also performed. The anatomical characteristics of the rhizome and tubers are associ...
Article
The objective of this review work is to characterize the enrichment axes in Poaceae, especially integrating into that analysis of those species with basal or subterranean cleistogamous spikelets. We recognize five types of enrichment axes: paraclades of the unit of inflorescence (UIF), paraclades of the trophotagma (TT) with exposed UIF; paraclades...
Article
Full-text available
This work presents the basics for interpreting the adult inflorescence structure in grasses. It provides an analysis of the This work presents the basics for interpreting the adult inflorescence structure in grasses. It provides an analysis of the variations in the grass inflorescence structure and their correlation with some of the developmental p...
Article
Full-text available
The structure of the synflorescence and the flowering units in Amaranthaceae are characterized. The synflorescence is polytelic. In the flowering unit we recognize the main florescence and the enrichment zone. The florescences may consist of: (1) Fully developed partial florescences bearing three or more flowers; (2) Partial florescences reduced to...
Article
Full-text available
Se estudia la anatomía del sistema de ramificación subterráneo en Cyperus corymbosus Rottb. var. subnodosus (Nees et Meyen) Kük. Se describe la anatomía del rizoma y del tubérculo en este taxón. Se realiza un análisis comparativo de las variaciones observadas en diferentes estadios de desarrollo. Las características anatómicas de rizoma y tubérculo...
Article
Abildgaardieae poses several taxonomic challenges, because there is no general agreement on its circumscription and infrageneric divisions. With the objective of providing data with taxonomic and phylogenetic value, the structures of the inflorescences of Abildgaardia, Bulbostylis, and Fimbristylis were analyzed following the methodology and termin...
Article
The objective of this study was to realize a typology approach toward the inflorescences in Scleria in order to provide characters that would have potential use in further taxonomic and phylogenetic research and that would allow identification of the tendencies and processes that could have yielded the variations within Scleria inflorescences. The...
Article
Full-text available
In grasses, inflorescence diversification and its correlation with species evolution are intriguing and not well understood. Part of this problem lies in our lack of comprehension about the inflorescence morphological complexity of grasses. We focused our study on the PCK clade (named for phosphoenol pyruvate carboxykinase), a well-supported monoph...
Article
The synflorescence structure of Cyperaceae is revised. It is postulated that the wide diversity shown by the synflorescences can be explained by the analysis of some processes that operate in different ways combined or independently. Twenty-five of such processes are identified and described as responsible for the great diversity detected in the sy...
Article
The PCK Clade, represented by six to nine genera, is a monophyletic group situated within the Paniceae tribe. The highly diverse inflorescences within the PCK Clade provide an interesting system for the study of morphological evolution and also may aid in better understanding its unclear systematics. The inflorescence structure of 110 members of th...
Article
The typology developed by Troll was followed to describe inflorescence structures for 15 species of Spartina. In all species here studied, truncation of the terminal spikelet of the main axis and primary paracladium was observed. The truncation can also involve the short paracladia subzone so that the inflorescence is confined to just the long para...
Article
Synflorescences of the Andropogoneae tribe are studied from a typological point of view. The criteria of CLAYTON & RENVOIZE (1986) were used in order to arrange the subtribes, excluding the former Maydeae as suggested by WATSON & DALLWITZ (1992). 36 taxa from 7 subtribes have been studied; data for other genera from CLAYTON & RENVOIZE (1986) and WA...
Article
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In the present work the inflorescences of 12 species of Cyperus sect. Luzuloidei Kunth sensu Kükenthal were analyzed using the methodology and terminology of Troll's school. All the inflorescences studied are polytelic (indeterminate). The inflorescences are anthela-like or capitate, and can be terminal or pseudolateral. Below the main florescence...
Article
The synflorescences of species related to Schizachyrium condensatum are typologically characterized. This species presents floriferous shoots with complex systems of ramification. In all species the inflorescence is polytelic and truncate. The typological pattern has been described and presents differences in the following parameters: length and sh...
Article
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The branching system of cultivated and wild populations of the climbing grass Melica sarmentosa Nees is described on the basis of cultivated and field plant observation. Two types of axes are recognized, namely, ‘basal climbing axes’ and ‘distal climbing axes’. These axes differ in position and morphology and show a particular distribution of branc...
Article
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Inflorescence development in Panicum maximum and Urochloa plantaginea was comparatively studied with scanning electron and light microscopy to test the transfer of P. maximum to Urochloa and to look for developmental features applicable to future cladistic studies of the phosphoenol pyruvate carboxykinase (PCK) subtype of C(4) photosynthesis clade...
Article
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La disminución de la digestibilidad en los forrajes está asociada al incremento de la pared celular y lignificación de los tejidos a medida que maduran. Todos los forrajes están compuestos de un conjunto heterogéneo de tipos celulares con características únicas que determinan la disponibilidad de los polisacáridos a los microorganismos del rumen. E...
Article
Melica macra Nees is a widespread grass of Central and Northern Argentina. It is considered an invasive weed in natural grasslands. The aim of the present paper is to describe the branching system of M. macra on the base of both the analysis of living plants obtained from seeds and maintained under cultivation, and the observation of plants growing...
Article
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RESUMEN En las últimas décadas han surgido distintas aproximaciones al aspecto dinámico e integral del crecimiento de las plantas, que interpretan en forma variada su estructura. Estas formas de abordar el estudio de los patrones de crecimiento son: sistema de vástagos, forma de crecimiento, arquitectura vegetal, teoría de plantas clonales y tipolo...
Article
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Sinflorescencias de 17 especies del género Melica presentes en Argentina han sido estudiadas desde el punto de vista tipológico. Las inflorescencias son politélicas, presentan florescencia principal, no sufrieron procesos de homogeneización y/o truncamiento y muestran un patrón similar de desarrollo de la zona paracladial. Las principales variacion...
Article
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Synflorescences of 17 species of Melica belonging to the argentinian flora were studied from a typological point of view. These species have polytelic inflorescences with a main florescence and a similar structural pattern in the paracladial zone. Processes of truncation and homogeneization were not observed. Among species, inflorescences mainly di...
Article
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The aim of the present paper is analyses the variability of the anatomy stem elements at different levels on the flowering shoots in Leersia hexandra, Luziola peruviana, Rhynchoryza subulata and Zizaniopsis bonariensis (Oryzeae - Poaceae). Samples were fixed in FAA, dehydrated, embedded in paraffin, sectioned with rotary microtome, stained with saf...
Article
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This work presents the basis for typological study of the infl orescences in Cyperaceae. Infl orescence variation in this family are analyzed and discussed from the typological point of view. However, this review does not intend to comprise all of the variation present in the infl orescence structure of the Cyperaceae.
Article
The anatomy of leaves and bracts of Cyperus prolixus H.B.K. is described, with emphasis on Kranz structure. The distribution of Kranz units in Cyperus prolixus is discussed in relation to the one present in C-4 species of Cyperus.
Article
The inflorescence of Cyperus giganteusVahl is characterized considering its typological features, and compared with the structural patterns described for other Cyperaceae inflorescences. Der Infloreszenzaufbau von Cyperus giganteusVahl wird analysiert und unter Berücksichtigung der typologischen Übereinstimmungen mit den für andere Cyperaceen besch...
Article
The aim of this work is to make a typological reinterpretation of Cariceae inflorescences, avoiding the particular analysis and terminology for specific taxa, since they would make the comparative studies more difficult. The inflorescence of the Cariceae is polytelic and truncated; it consists of a region of homogenized distal short paracladia (pse...
Article
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The aim of this work is to characterize anatomical variations of the leaves and stems of the reproductive shoots of Bromus auleticus Trin. ex Ness. The samples were fixed in FAA (formalin-acetic-alcohol mixture) and cross sections, were cut from material embedded in paraffin wax according to standard methods, stained with safranina-fast green in ca...