Results: 52

Photosynthetic acclamatory response of Panicum antidotale Retz. populations to root zone desiccation stress

Braz. j. biol; 84 (), 2024
Abstract Growth of plants is severely reduced due to water stress by affecting photosynthesis including photosystem II (PSII) activity and electron transport. This study emphasised on comparative and priority targeted changes in PSII activity due to progressive drought in seven populations of Panicum ant...

A comprehensive overview of miRNA targeting drought stress resistance in plants

Braz. j. biol; 83 (), 2023
Abstract MicroRNAs (miRNAs) are essential nonprotein-coding genes. In a range of organisms, miRNAs has been reported to play an essential role in regulating gene expressions at post-transcriptional level. They participate in most of the stress responsive processes in plants. Drought is an ultimate abioti...

Regulon: An overview of plant abiotic stress transcriptional regulatory system and role in transgenic plants

Braz. j. biol; 83 (), 2023
Abstract Population growth is increasing rapidly around the world, in these consequences we need to produce more foods to full fill the demand of increased population. The world is facing global warming due to urbanizations and industrialization and in this concerns plants exposed continuously to abiotic...

The pattern of alternative splicing and DNA methylation alteration and their interaction in linseed (Linum usitatissimum L) response to repeated drought stresses

Biol. Res; 56 (), 2023
BACKGROUND: Drought stress has significantly hampered agricultural productivity worldwide and can also result in modifications to DNA methylation levels. However, the dynamics of DNA methylation and its association with the changes in gene transcription and alternative splicing (AS) under drought stress ...

Comparación de series mensuales de precipitación y temperaturas de los Modelos CMIP6 para Guatemala

Cienc. tecnol. salud; 9 (2), 2022
Se comparan las métricas de 37 modelos climáticos globales (GCMs, por sus siglas en inglés) de la Fase 6 del Proyecto de Intercomparación de Modelos Acoplados (CMIP6) con el objetivo de simular el clima de Guatemala del periodo de 1971 al 2014. La temperatura y precipitación mensual fue comparada co...

Comportamiento meteorológico durante la sequía de medio verano en Guatemala

Cienc. tecnol. salud; 9 (2), 2022
El objetivo de esta investigación consistió en explorar el comportamiento histórico de la temperatura, precipitación y la radiación saliente de onda larga (OLR) para Guatemala, durante el período de sequía de medio verano (canícula). El procedimiento metodológico partió del uso de la base de da...

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

Braz. j. biol; 82 (), 2022
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 treatment...

Exogenously applied nutrients can improve the chickpea productivity under water stress conditions by modulating the antioxidant enzyme system

Braz. j. biol; 82 (), 2022
Water stress is one of the major factor restricting the growth and development of chickpea plants by inducing various morphological and physiological changes. Therefore, the present research activity was designed to improve the chickpea productivity under water stress conditions by modulating antioxidant...

Structure and character analysis of cotton response regulator genes family reveals that GhRR7 responses to draught stress

Biol. Res; 55 (), 2022
BACKGROUND: Cytokinin signal transduction is mediated by a two-component system (TCS). Two-component systems are utilized in plant responses to hormones as well as to biotic and abiotic environmental stimuli. In plants, response regulatory genes (RRs) are one of the main members of the two-component syst...

Silicon as an attenuator of drought stress in plants of Oryza sativa L. treated with dietholate

Braz. j. biol; 81 (4), 2021
Abstract Silicon (Si) is an element that can improve the growth and development of rice plants in water-deficient environments because it is an enzymatic stimulant, signaling for production of antioxidant compounds. Therefore, the aim of this study was to examine the relationship between water deficiency...