Francisca M. Castillo

Francisca M. Castillo
Universidad Austral de Chile · Facultad de Ciencias

Biochemist, PhD in Agricultural Sciences

About

19
Publications
3,008
Reads
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72
Citations
Introduction
Postdoctoral Researcher in Plant Nutrition and Genomics Lab at Universidad Austral de Chile, working on heat stress and yield determination in wheat
Additional affiliations
March 2019 - March 2022
Universidad Austral de Chile
Position
  • PostDoc Position

Publications

Publications (19)
Article
Full-text available
In a changing climate, extreme weather events such as heatwaves will be more frequent and could affect grain weight and the quality of crops such as wheat, one of the most significant crops in terms of global food security. In this work, we characterized the response of Triticum turgidum L. spp. durum wheat to short-term heat stress (HS) treatment...
Preprint
Full-text available
In a changing climate, extreme weather events such as heat waves will be more frequent and could affect grain weight and the quality of crops such as wheat, one of the most significant crops in terms of global food security. In this work, we characterized the response of Triticum turgidum spp. durum wheat to a short-term heat-stress (HS) treatment...
Article
Full-text available
A critical barrier to improving crop yield is the trade-off between seed weight (SW) and seed number (SN), which has been commonly reported in several crops, including Brassica napus. De-spite the agronomic relevance of this issue, the molecular factors involved in the interaction be-tween SW and SN are largely unknown in crops. In this work, we pe...
Article
Full-text available
Wheat is the most widely grown crop globally, providing 20 % of all human calories and protein. Achieving step changes in genetic yield potential is crucial to ensure food security, but efforts are thwarted by an apparent trade-off between grain size and number. Expansins are proteins that play important roles in plant growth by enhancing stress re...
Article
Full-text available
Background: Grain weight (GW) is a key component of sunflower yield and quality, but may be limited by maternal tissues. Cell growth is influenced by expansin proteins that loosen the plant cell wall. This study aimed to identify spatio-temporal expression of EXPN genes in sunflower reproductive organ tissues (ovary, pericarp, and embryo) and evalu...
Article
Grain weight (GW) is an important component of grain yield and quality of sunflower and the improvement of this trait has been proposed as an aim for breeding of this crop. There is strong evidence suggesting the pre-flowering period as key to determining GW in different crops; however, the key traits and mechanisms controlling GW during this phase...
Poster
Full-text available
There is evidence that sugars play essential roles during seed development. However, the knowledge about the role of sugars on grain growth of crops is still partial, and less is known on these sugars at early stages of grain growth when grain potential weight is set. This study evaluates the sugars concentration and the expression of genes involve...
Poster
Full-text available
Grain weight (GW) is key yield and quality component of sunflower. Previous studies have shown that GW is sensitive to shading during pre-flowering in sunflower. During the initial phase of grain growth, maternal tissues (ovaries and the pericarp of the grains) undergo a remarkable expansion as it is the main component of grain at this time, it has...
Conference Paper
Full-text available
Grain size is the result of the coordinated growth of the embryo, endosperm and maternal tissues. Understanding the clues of the development and growth of these tissues is essential for increasing grain weight, a key component of sunflower yield and quality. This research was aimed at evaluating the effect of pre-anthesis shading (source-sink ratio...
Conference Paper
Full-text available
Grain weight is a key component of yield and quality of sunflower. Taking into account that the ovaries of flowers became the pericarp of grains in grasses and dicots such as sunflower, it has been proposed that the maternal tissues impose a physical restriction to growing grains in these crops. The physiological processes supporting the hypothesis...
Poster
Full-text available
The main components of crop yield are the number of grains per unit area and the average weight of grains. To understand the genetic and environmental clues determining both yield components is critical for further increasing yield potential of grain crops. Knowledge gained recently on physiological, genetic and biochemical mechanisms affecting gra...
Poster
Full-text available
En el cultivo de maravilla se ha demostrado que el período alrededor de la floración es crítico para la determinación del rendimiento. Sin embargo, existe controversia sobre la sensibilidad e interacción de los componentes del rendimiento (i.e., número y peso de grano) en respuesta a la disponibilidad de fotoasimilados durante dicha etapa. Esta inf...
Poster
Full-text available
Taking into account that the ovary of flowers develop into the pericarp of grains in grasses and dicots such as sunflower, it has been proposed that the pericarp imposes a physical restriction to growing kernels. The physiological processes through which the pericarp controls kernel weight (KW) are only starting to be understood. The expansins are...

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Projects

Projects (3)
Project
The objective of this project is to improve the knowledge of physiological mechanisms and key genes controlling the determination of GN, GW, their interaction and grain quality of wheat in key and unique genotypes (transgenic and triple-mutant wheats)under contrasting management (plant density) and climatic (locations) conditions. The determinations of GN and GW overlap from booting to 10 days after anthesis. This overlapping is seen in this project as the key to unlock the understanding of the GW-GN trade-off as well as the key and unique genotypes.
Project
Analizar el efecto de la pérdida o ganancia de función del gen ROTA2BL_500 sobre el rendimiento y calidad de los granos de trigo después de un evento de choque térmico y determinar su relación con procesos de termotolerancia.