Expressão gênica diferencial em genótipos de mamona (Ricinus communis L.) submetidos a déficit hídrico induzido por PEG

Moraes, Patrícia Favoretto; Laat, Daiane Mariele de; Santos, Marina Erê Almeida Hummel Pimenta; Colombo, Carlos Augusto; Kiihl, Tammy Aparecida Manabe

doi:10.1590/1678-4499.0207

Cited by 7 publications

(4 citation statements)

References 28 publications

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“…During periods when photosynthesis was close to zero, ABA likely promoted adjust in seedlings during exposure to water deficit, stimulated antioxidant enzyme activity. Understanding the antioxidant system of plants is essential for the selection of approaches that results in less sensitivity to water deficit and increased tolerance to drought (Moraes et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

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Photosynthetic metabolism and antioxidant in Ormosia arborea are modulated by abscisic acid under water deficit?

et al. 2022

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The aim of this research was to evaluate the effect of abscisic acid (ABA) on gas exchange and the activity of antioxidant enzymes of Ormosia arborea (Vell.) Harms seedlings under water deficit and its influence on the recovery potential of the seedlings. The experiment was conducted using four treatments, being daily irrigation or water restriction without and with 10 μM ABA. Seedlings under water deficit + ABA showed greater adjustment to drought, and when re-irrigated, they restored photosynthetic metabolism and water potential. ABA minimizes the reduction in the photosynthetic metabolism and water potential of the leaf, however, it does not increase the antioxidant activity of the O. arborea seedlings under water deficit. These results suggest that this species exhibits plasticity, which enables it to survive also in environments subjected to temporary water deficit regardless of the supplementation of ABA. We suggest that other doses of ABA be researched to expand the beneficial effect of ABA on this species.

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Section: Discussionmentioning

confidence: 99%

“…It also affects the metabolism of nutrients and plant growth regulators, photosynthesis, respiration, and translocation of photo-assimilates. Consequently, water stress reduces plant growth (Campelo et al, 2015;Moraes et al, 2015;Taiz et al, 2017;Junglos et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic metabolism and antioxidant in Ormosia arborea are modulated by abscisic acid under water deficit?

et al. 2022

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“…Knowing the most common keywords and the co-occurrence networks in studies conducted worldwide on resistance/tolerance to drought stress in plants serves to improve the understanding of the physiological mechanisms of response to water deficit in plants, in addition to serving as support for new research aimed at directing genetic improvement programs [3,40,41].…”

Section: Systematic Reviewmentioning

confidence: 99%

Advances in Crop Genetic Improvement to Overcome Drought Stress: Bibliometric and Meta-Analysis

da Silva,

Cassa,

de Melo

et al. 2023

Agriculture

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Plant resistance to drought stress is a parameter that should be studied with more emphasis in the search for higher agricultural yields. In this scenario, research within breeding programs should be directed toward specific mechanisms of action and important agricultural crops in worldwide agribusiness. From this perspective, this study carried out a bibliographic investigation regarding the advances in genetic improvement aimed at drought stress in crops using a hybrid model of analysis of scientific articles. The analysis employed bibliometric parameters for qualitative and quantitative discussion of scientific production and the methodological process of systematic review for the synthesis of the results obtained. The work was divided into four stages: the search for articles in databases, meta-analysis, bibliometric analysis, and systematic analysis. Scientific articles were searched for on the Scopus, Scielo, and Web of Science databases within a 20-year timeframe. Most authors and institutions were from Asian countries, demonstrating the need for global expansion of research on the subject. With regard to the co-occurrence networks between the keywords used in the search, a focus was observed on the following terms: drought resistance, drought stress; drought, and drought tolerance. Evidently, the primary mechanism of tolerance or even resistance studied in breeding programs is associated with the expression of genes and genetically modified organisms that confer resistance to plants. Also, the crops addressed in the research retrieved are highly diverse.

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“…In recent studies, the use of data analysis by univariate methods is efficient, particularly when the objective is to differentiate genotypes of the same species, for example R. communis L. (Moraes et al, 2015). However, there is significant increase in the literature of the use of multivariate data analysis for discrimination of genotypes or accesses with desirable agronomic characteristics or for genetic improvement (Rodrigues et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Screening of spontaneous castor bean accesses for genetic improvement programs

Ferraz¹,

Batista²,

Barbosa³

et al. 2016

Afr. J. Biotechnol.

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The objective of this work was to identify, through the use of multivariate analysis, the spontaneous accesses of castor bean that show promising characteristics for inclusion in genetic improvement programs of this culture in Brazil. The study was conducted at the Paulista State University, Jaboticabal Campus. The accesses of castor bean seeds obtained were identified as ACS-001-CRSP, ACS-001-JASP, ACS-001-MASP, ACS-001-SESP, ACS-002-JASP, ACS-002-SESP and ACS-003-JASP, from the municipalities of Jaboticabal, Monte Alto, Santa Ernestina and from the District of Córrego Rico. The seeds' biometric variables and germination potential were measured, in addition to the biomass accumulation of the seedling's vegetative parts. The experimental design was completely randomized, with seven treatments and four replications. The original data was standardized and submitted to multivariate analysis of principal components and grouping. Through the results obtained, it is possible to reduce the number of original variables into two latent variables with discriminant power between the castor bean accesses, being the multivariate analysis efficient in this process. The castor bean accesses ACS-001-CRSP and ACS-001-MASP are promising for introduction in genetic improvement programs of this culture.

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Expressão gênica diferencial em genótipos de mamona (Ricinus communis L.) submetidos a déficit hídrico induzido por PEG

Cited by 7 publications

References 28 publications

Photosynthetic metabolism and antioxidant in Ormosia arborea are modulated by abscisic acid under water deficit?

Photosynthetic metabolism and antioxidant in Ormosia arborea are modulated by abscisic acid under water deficit?

Advances in Crop Genetic Improvement to Overcome Drought Stress: Bibliometric and Meta-Analysis

Screening of spontaneous castor bean accesses for genetic improvement programs

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