Brassinosteroids: A Multifunctional Phytohormone of Plant Development and Stress Responses

Praveena, Jannela; Dash, Satyanarayan; Behera, Laxmipreeya; Rout, Gyana Ranjan

doi:10.9734/cjast/2020/v39i2530896

Cited by 9 publications

(6 citation statements)

References 158 publications

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“…BRI1 activates BZR1 and BES1 downstream TFs for inducing stress tolerance [19,47,133]. Upon BR perception, BR signals are relayed to BES1 and BZR1 via a signaling cascade, which eventually controls the transcription of genes regulated by the BRs [7,9,134,135]. BAK1, another LRR receptor kinase, interacts with BRI1 and acts as a co-receptor.…”

Section: Brs Signaling In Plantsmentioning

confidence: 99%

Brassinosteroids (BRs) Role in Plant Development and Coping with Different Stresses

Manghwar

Hussain

Gao

et al. 2022

IJMS

145

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Plants are vulnerable to a number of abiotic and biotic stresses that cause a substantial decrease in the production of plants. Plants respond to different environmental stresses by experiencing a series of molecular and physiological changes coordinated by various phytohormones. The use of phytohormones to alleviate abiotic stresses has recently achieved increasing interest. Brassinosteroids (BRs) are a group of polyhydroxylated steroidal phytohormones that are required for the development, growth, and productivity of plants. These hormones are involved in regulating the division, elongation, and differentiation of numerous cell types throughout the entire plant life cycle. BR studies have drawn the interest of plant scientists over the last few decades due to their flexible ability to mitigate different environmental stresses. BRs have been shown in numerous studies to have a positive impact on plant responses to various biotic and abiotic stresses. BR receptors detect the BR at the cell surface, triggering a series of phosphorylation events that activate the central transcription factor (TF) Brassinazole-resistant 1 (BZR1), which regulates the transcription of BR-responsive genes in the nucleus. This review discusses the discovery, occurrence, and chemical structure of BRs in plants. Furthermore, their role in the growth and development of plants, and against various stresses, is discussed. Finally, BR signaling in plants is discussed.

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Section: Brs Signaling In Plantsmentioning

confidence: 99%

Brassinosteroids (BRs) Role in Plant Development and Coping with Different Stresses

Manghwar

Hussain

Gao

et al. 2022

IJMS

145

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“…Drought tolerance is a complex trait that encompasses growth stabilisation, water relations and several stress-sensing/response mechanisms 29 . In a physiological approach, drought sensing and response comprise, among others, reactive oxygen species (ROS) generation, detection and control via enzymatic and non-enzymatic paths 29 that BRs can regulate to prevent ROS-induced injuries 30 . When analysing the DI-31 effects on Munasqa antioxidant response, our findings confirmed that the analogue, independently of the water availability, favoured the enzymatic scavenging of superoxide radicals (O 2 − ) and hydrogen peroxide (H 2 O 2 ).…”

Section: Discussionmentioning

confidence: 99%

A brassinosteroid functional analogue increases soybean drought resilience

Perez-Borroto

Guzzo

Posada

et al. 2022

Sci Rep

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Drought severely affects soybean productivity, challenging breeding/management strategies to increase crop resilience. Hormone-based biostimulants like brassinosteroids (BRs) modulate growth/defence trade-off, mitigating yield losses; yet, natural molecule's low stability challenges the development of cost-effective and long-lasting analogues. Here, we investigated for the first time the effects of BR functional analogue DI-31 in soybean physiology under drought by assessing changes in growth, photosynthesis, water relations, antioxidant metabolism, nodulation, and nitrogen homeostasis. Moreover, DI-31 application frequencies' effects on crop cycle and commercial cultivar yield stabilisation under drought were assessed. A single foliar application of DI-31 favoured plant drought tolerance, preventing reductions in canopy development and enhancing plant performance and water use since the early stages of stress. The analogue also increased the antioxidant response, favouring nitrogen homeostasis maintenance and attenuating the nodular senescence. Moreover, foliar applications of DI-31 every 21 days enhanced the absolute yield by ~ 9% and reduced drought-induced yield losses by ~ 7% in four commercial cultivars, increasing their drought tolerance efficiency by ~ 12%. These findings demonstrated the practical value of DI-31 as an environmentally friendly alternative for integrative soybean resilience management under drought.

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“…Wang et al (2013) also observed that the use of CK favored the nutritional status of nitrogen during heat stress in creeping bentgrass. Praveena et al (2020) report that the use of brassinosteroids favors nutrient content in plants under multiple abiotic stresses. This result may be due to the fact that these compounds increase the contents of osmolytes within the roots, favor mass flow, prevent the degradation of proteins responsible for nitrogen uptake, and promote the expression of transport channels (Liu et al 2020;Praveena et al, 2020;Kothari and Lachowiec, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…(2013) also observed that the use of CK favored the nutritional status of nitrogen during heat stress in creeping bentgrass. Praveena et al. (2020) report that the use of brassinosteroids favors nutrient content in plants under multiple abiotic stresses.…”

Section: Discussionmentioning

confidence: 99%

Foliar cytokinins or brassinosteroids applications influence the rice plant acclimatization to combined heat stress

Pantoja-Benavides

Garcés-Varón²,

Restrepo-Díaz³

2022

Front. Plant Sci.

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The effect of different foliar sprays numbers of cytokinins – (CK) and brassinosteroids – (BR) on the physiological, biochemical, and panicle parameters of rice plants subjected to combined heat stress (high day/night temperatures) were studied in three different experiments. The treatments established for the first (E1) and second (E2) experiments were the following: i) absolute control, ii) stress control, iii) heat stress + one foliar spray of CK, iv) heat stress + two foliar sprays of CK, v) heat stress + three foliar sprays of CK, vi) heat stress + one foliar spray of BR, vii) heat stress + two foliar sprays of BR, or viii) heat stress + three foliar sprays of BR. For the third experiment (E3), the treatments were the following: i) absolute control, ii) stress control, iii) heat stress + three foliar applications of CK, iv) heat stress + three foliar applications of BR. Rice-stressed plants and sprayed with three foliar sprays of CK or BR had a better stomatal conductance in E1 and E2 compared to their heat-stressed control. The relative tolerance index suggests that three CK or BR applications helped to mitigate the combined heat stress in both experiments. The foliar CK or BR applications at the flowering and grain-filling stages in rice-stressed plants increased Fv/Fm ratio and panicle characteristics (number of filled spikelets and the percentage of panicle blanking in E3). In conclusion, foliar applications of BR or CK can be considered an agronomic strategy to help improve the negative effect of combined heat stress conditions on the physiological behavior of rice plants during different phenological stages.

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Brassinosteroids: A Multifunctional Phytohormone of Plant Development and Stress Responses

Cited by 9 publications

References 158 publications

Brassinosteroids (BRs) Role in Plant Development and Coping with Different Stresses

Brassinosteroids (BRs) Role in Plant Development and Coping with Different Stresses

A brassinosteroid functional analogue increases soybean drought resilience

Foliar cytokinins or brassinosteroids applications influence the rice plant acclimatization to combined heat stress

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