Vinícius Coelho Kuster

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• PhD in Plant Biology
• Professor at Federal University of Jataí

Gall-inducing organisms cause anatomical, micromorphometric, histochemical, and immunocytochemical modifications in the cell walls of host plant organs and tissues, leading to gall formation. Natural enemies, such as inquilines, interact with the gall by feeding on its tissues and modifying it structurally and chemically, as may occur in globoid l...

O parasitismo é um assunto pouco abordado no ensino básico, especialmente para plantas. Em plantas, as galhas se formam por meio de uma relação parasita-planta hospedeira e podem ser bons sistemas didáticos para se ensinar parasitismo. O presente trabalho tem como objetivo apresentar o uso de uma aula prática laboratorial sobre relações ecológicas,...

Many insect-induced galls are considered complex structures due to their tissue compartmentalization and multiple roles performed by them. The current study investigates the complex interaction between Nothofagus obliqua host plant and the hymenopteran gall-inducer Espinosa nothofagi, focusing on cell wall properties and cytological features. The E...

In response to the restrictions imposed by their epiphytic habit, orchids have developed structural traits that allow greater efficiency in water uptake and use, such as a complex adventitious root system with velamen. The composition of cell wall of this specialized epidermis can be altered according to the substrate to which it is fixed, influenc...

Gibberellin (GA) and cytokinin (CK) signaling play antagonistic roles in leaf development and secondary plant growth. In the current study, we investigated the effects of changes in the balance of CKs and GAs on the development and leaf and stem morpho-anatomy of Delonix regia (Bojer ex. Hook.) Raf. seedlings. The balance of CKs and GAs was modifie...

Trapping trichomes, a common trait found in protogynous trap flowers, are thought to enable interaction with pollinators, promoting both pollen removal and fruit set. However, this hypothesis has yet to be empirically confirmed. In this study, we experimentally tested whether trapping trichomes favour male and female functions in trap flowers. Usin...

Recent rise in desert rose production, the expanded cultivation of this species may promote infestation by certain insects and mites. One such insect, the fungus gnats (Bradysia sp), also known as fungus flies, have been damaging numerous ornamental plant species. This study reported the incidence of fungus gnats infesting desert rose plants in the...

A constante presença das plantas na vida cotidiana requer ações educativas que permitam que os estudantes visualizem as conexões entre o abstrato e o concreto ampliando compreensões e valorizando conhecimentos relacionados às plantas. Assim sendo, o presente relato tem como objetivo apresentar o uso de uma aula prática laboratorial e modelos didáti...

Sugars, hormones and plant cell wall components regulate many aspects of somatic embryogenesis which requires detailed investigations of the process. In the present study, we investigated the histology, chemical composition of the cell wall, sugar and nitrogen metabolism, and hormonal profile associated with the induction and formation of embryogen...

Different heights of forage management modify the plant architecture, changing the proportion of young and mature tissues and its nutritional value. Thus, the objective of this study was to evaluate the tissue composition of leaves of hybrid Urochloa cv. Mulato II (syn. Brachiaria) kept under four management conditions simulating continuous grazing...

The cell wall plays a primary role in plant growth, which is regulated by cellulose microfibrils, proteins, and pectins. Regarding pectins, the rate of homogalacturonan (HG) methylesterification and the type of rhamnogalacturonan side chains can mediate leaf development. Herein, we evaluated pectic compounds of the cell walls by immunocytochemistry...

Gall formation impacts the development of plant species by altering the structure and mobilization of reserves, and the functional and physiological patterns of the host organ. The current study aimed to evaluate the impact generated by the Neolithus fasciatus galling insect (Hemiptera: Triozidae) in Sapium glandulosum leaves (Euphorbiaceae) at the...

Context The parasitic interaction between the galling insect Palaeomystella oligophaga (Lepidoptera) and the host plant tissues of Macairea radula (Melastomataceae) leads to the formation of globoid galls. These galls have storage and typical nutritive tissues (outer and inner compartments, respectively), whose functions may be related to different...

The galls can offer shelter, protection, and an adequate diet for the gall-inducing organisms. Herein, we evaluated the structure of Manihot esculenta leaves and galls induced by Iatrophobia brasiliensis in order to identify metabolic and cell wall composition changes. We expected to find a complex gall with high primary metabolism in a typical nut...

Galls are a kind of plant-organism interaction defined as a manifestation of the reprogramming of plant cell growth induced by organisms with ecological impacts on host plants. The galling insect taxa and the targeted plant organ for oviposition determine the gall morphology and its histological features. Galls induced at budding sites can develop...

Safflower (Carthamus tinctorius L.) is a crop with wide commercial potential, due to the broad adaptability of cultivation and use conditions, but commercial initiatives are deficient. This scenario extends to academic research, which also focuses little on understanding the involved processes from the germination of its seeds to the correct manage...

Infection by the root-knot nematode (RKN) Meloidogyne incognita impacts crop productivity worldwide, including parsley cultures (Petroselinum crispum). Meloidogyne infection involves a complex relationship between the pathogen and the host plant tissues, leading to the formation of galls and feeding sites that disorganize the vascular system, affec...

Introduction: Defined seasonality in savanna species can stimulate physiological responses that maximize photosynthetic metabolism and productivity. However, those physiological responses are also linked to the phenological status of the whole plant, including leaf phenophases. Objective: To study how physiological traits influence phenophase timi...

The “gabirobeira”, Campomanesia pubescens (DC.) O. Berg. (Myrtaceae), presents structural variations that make it difficult to understand the morphological limits of the species, with already descriptions of different morphotypes. The current study aimed to compare the leaf morphological and anatomical organization of three morphotypes of C. pubesc...

Key message The germination of Delonix regia seeds is mediated by oxidative stress signaling and the activation of antioxidant enzymes. The reserve mobilization is correlated with the morpho-anatomical changes observed during seedling development. Abstract A comprehensive picture of structural and physiological changes throughout the germination a...

Plant growth regulators (PGRs) and types of flasks sealing that allow gas exchange can favor the development of in vitro plant propagation systems. The objective of the present study was to evaluate the eff ects of cytokinin supplementation on the induction of shoot proliferation and the influence of gas exchange on the in vitro development of Jaca...

Although the Atlantic Forest is considered a humid environment, plants that grow on rock outcrops present adaptive strategies, which correlate with tolerance to desiccation. Colleters are secretory structures that protect meristems and developing organs from dehydration and attack by herbivores or pathogens. Colleters are common in Gentianaceae; ho...

The high levels of oxidative stress detected in gall tissues, the production of phenolic derivatives as scavengers of these molecules, and the changes in the gall photochemical efficiency have been related to the feeding behavior of galling insects. Herein, we evaluated the oxidative stress, photochemical parameters and pigment contents in four le...

Plant galls are generated by the stimuli of gall-inducing organisms on their hosts, creating gall morphotypes that vary in color, shape, size, and tissue organization. Herein, we propose to compare the structural features of gall morphotypes on the superhost Croton floribundus (Euphorbiaceae) in order to recognize gall morphospecies, i.e., galls wi...

Leaf ontogenesis is imperative for the establishment and regulation of its structural and functional properties, in addition to being an excellent tool for assigning specimens to different groups of angiosperms. Even though the importance of leaf morphology and anatomy for taxonomic use is well known, few studies have addressed the processes of lea...

Root-knot nematodes are endoparasites whose mature females lodge and grow inside the root of some cultivated plants, leading to losses in productivity. Herein, we investigated if the infection of okra, Abelmoschus esculentus (Malvaceae), promoted by the root-knot nematode Meloidogyne incognita (Meloidogynidae) changes some agronomic traits of the h...

Leaf development is affected by different amounts of light, leading to structural and physiological gradients. Young leaves are normally more sensitive to high light levels, which may trigger different strategies for light protection. On this basis, the objective of the current study was to determine strategies used by young (1st node, red), in tra...

The development of plant organs depends on cell division, elongation, structural and chemical changes, as well as reorganization of cell wall components. As phenotype manipulators, galling insects can manipulate the structure and metabolism of host tissues to build the gall. The gall formation depends on the rearrangement of cell wall components to...

Galling insects manipulate host plant tissues for their own benefit. Because of feeding activity of the gall insects, both structural and metabolic changes occur in the host plant, leading to the formation of an abnormal growth of new organ (the gall). Galls induced by Palaeomystella oligophaga (Lepidoptera) on Macairea radula (Melastomataceae) dep...

The developmental processes of galls are better known when they are induced on vegetative organs, whereas they have hardly ever been described for reproductive ones. Herein, galls induced by Allorhogas uberlandiensis (Hymenoptera) on ovules of Miconia chamissois Naudin (Melastomataceae) were analyzed in terms of morphological, anatomical, histochem...

Plants under field conditions are subject to different types of abiotic stresses such as drought, salinity, and light excess that adversely affect their growth and survival. In addition, several studies have pointed out the effect of climate change such as an increase in the concentration of atmospheric CO2 , as well as an increase in global temper...

• Although the production of extranuptial nectar is a common strategy of indirect defense against herbivores among tropical plants, the presence of extranuptial nectaries in reproductive structures is rare, especially in ant‐plants. This is because the presence of ants in reproductive organs can generate conflicts between the partners, as ants can...

• The partial or complete loss of chlorophylls, or albinism, is a rare phenomenon in plants. In the present study, we first report the occurrence of albino Delonix regia seedlings and describe the morpho‐physiological changes associated with albinism. • Wild‐type and albino seedlings were characterized. Leaflets samples were processed following usu...

The establishment of the galling insect generates a biotic stress that leads to tissue transformation. However, galls can maintain chlorophyll (Chl) and consequently photosynthesize. Herein, we evaluated the consequences of the biotic stress generated by the galling insect Pseudophacopteron longicaudatum on photosynthetic rate during the leaf galls...

Salt glands, which exclude salt solution to avoid tissue toxicity, have been reported for halophytes species of Primulaceae. Jacquinia armillaris is a species of Primulaceae that occurs in saline coastal environments in the Neotropics and possesses peltate trichomes sunken in leaf surface. The present study investigated these trichomes to describe...

The gall structure is built from redifferentiation of host plant tissues, changing the cell wall proprieties and associated functions. Because of the oxidative stress imposed by the galling insect on the plant tissues, some phenotypic traits associated with cell wall metabolism may be suppressed during gall development. Using an immunocyto-chemical...

Ceropsylla pouteriae Burckhardt sp. nov. is described and illustrated from Brazil: Minas Gerais. It induces pit galls on the leaves of Pouteria ramiflora (Mart.) Radlk. (Sapotaceae), a characteristic tree of the Cerrado biome. The previously artificial genus Ceropsylla is redefined and six species are transferred from Ceropsylla to Trioza as Trioza...

Galls formed by root-knot nematodes have been studied in several cultivated species focusing on understanding the intimate relationship between parasite and the host plant. Species of Meloidogyne induce the development of a feeding site in the cortex or vascular cylinder of the host plant and are totally dependent on this site formation to complete...

Gall morphotypes depend on continuous chemical and feeding stimuli of the gall inducer, which promotes specific structural and metabolic changes in plant tissues. The galling insect manipulates host-plant tissues and may stimulate the production of primary and secondary metabolites. The type of chemical arsenal and the storage site varies according...

Insect-induced galls usually develop nutritional cells, which they induce and consume directly, and any metabolic modification of those cells may reflect changes of the insect’s own metabolism. The system Palaeomystella oligophaga (Lepidoptera)—Macairea radula (Melastomataceae) presents a series of natural enemies, including parasitoids and cecidop...

The original version of this article unfortunately contains an error. The correct caption of Figures 2 and 3 are shown in this paper.

How does the deposition of cell wall components structure cell shape and function during leaf ontogenesis? Although this issue has been the subject of several studies, a wide variety of standards have been reported and many knowledge gaps remain. In this study we evaluated cell wall composition in leaf tissues of Lavoisiera mucorifera Mart. & Schra...

The histochemistry approach has been used to understand cell metabolism modulation by galling organisms on their host-plant organs and the relationship of the accumulation of metabolites with the ecological and physiological roles. The main secondary classes of metabolites (i.e., phenolic compounds, terpenes, and alkaloids) have been mainly associa...

RESUMO O lençol freático vem assumindo papel de destaque nos últimos anos nos estudos sobre a estrutura das comunidades vegetais na Restinga, o que nos levou a comparar a estrutura florística e fitossociológica entre formações arbustivas abertas inundáveis e não inundáveis. Levantamento florístico e método do intercepto de linha foram realizados em...

Jacquinia armillaris occurs in post-beach and rocky outcrops environments, which led to hypothesize that they are morphological and anatomical plasticity in its leaves to inhabit these two coastal formations. Anatomical, histochemical and micromorphometric analyzes were performed to understand the leaf plasticity. The leaf lamina is dorsiventral an...

Gall-inducing insects manipulate the structural, histochemical and physiological profiles of host-plant tissues to develop galls. We evaluated galls induced by Eugeniamyia dispar on the leaves of Eugenia uniflora in an attempt to answer the following questions: (i) How does this gall-inducing insect change the structural and histochemical profiles...

O Cerrado apresenta diferentes fitofisionomias, nas quais os indivíduos apresentam variação no nível de sombreamento. As plantas apresentam variações morfológicas e fisiológicas relacionadas à essa heterogeneidade. A folha é o órgão com maior plasticidade, quando proveniente de ambientes com elevada luminosidade apresenta maior espessura do mesofi...

O Cerrado apresenta heterogeneidade ambiental sendo classificado em diferentes fitofisionomias. O presente estudo visou comparar aspectos morfológicos, anatômicos e fisiológicos da espécie modelo Aspidosperma macrocarpon em duas fitofisionomias. Foram avaliados atributos fisiológicos como eficiência fotossintética e pigmentos e anatômicos como área...

Coastal areas present limiting environmental conditions, such as high soil salinity, intense winds, elevated temperature and coastal flooding, which may be related to adaptive anatomical characters. This study aims to evaluate the anatomy of the stems and roots of Restinga plants (eudicots: Blutaparon portulacoides, Canavalia rosea, Ipomoea pes-cap...

Plants respond to variation in luminosity leading to the existence of distinct leaf traits in plants that inhabit the understory, edge, and canopy of tropical forests. In the present work, the long-life leaves of Ouratea castaneifolia Engl. (Ochnaceae) in forest edge and understory were evaluated. Leaves of 20 individuals were collected from each h...

The dynamics of cell wall components during gall development are related to structural specialization to meet the defensive or nutritional requirements of gall tissues. Cell wall features have been studied mostly in galls induced by hemipterans (Psylloidea), while galls induced by Cecidomyiidae have been little explored. We applied monoclonal antib...

Plasticity in plants could be changed due to abiotic factors, tending to increase fitness across environments. In the Neotropical savannah, a strong water deficit during the dry season is one of the main factors limiting the plasticity in physiological responses of plants. The present study aims to assess the plasticity in physiological responses a...

The phytophysiognomies of the Neotropical savannah occur at different altitudes, which can determine distinctions in the levels of light and shade that plants are exposed. The focus of the study is analysing the functional traits of the leaves of Byrsonima verbascifolia (L.) Rich., Roupala montana Aubl. and Solanum lycocarpum A. St.-Hil. growing in...

The rupestrian fields have two well-defined seasons throughout the year, with rainfall rates that reflect the rainy and dry seasons. This distinction in water availability affects the morphology, physiology and chemistry of plants, among other characteristics. Thus, it is aimed at evaluating the leaf water status, vegetative phenology and photosynt...

Glandular trichomes and laticifers occur in I. pes-caprae (L.) Stweet (Convolvulaceae) and I. imperati (Vahl) Griseb. However, the importance of their secretion for the species survival in “Restinga” environments had not yet been investigated. This study aimed to anatomically and histochemically characterize such secretory structures in the two spe...

Chemical components act in plant defense and protection, but many of them are extracted and used medicinally. For Cerrado, active chemical components are used in the treatment of diseases, which strengthens the necessity for pharmacological studies of plants of that environment. The objective was to evaluate the histochemistry of the leaf blade of...

Rupestrian fields are located above 900 m of altitude and have many endangered plants. They may present patches of Campo sujo (shrub savannah), which is a phytophysiognomy commonly found in Neotropical savannah at lower altitudes. Based on the atypical occurrence of the Campo sujo area were studied the morphological and physiological responses of t...