1、Brassinolide can improve drought tolerance of maize

Studies have shown that appropriate brassinolide treatment can reduce damage caused by membrane lipid peroxidation, enhance the activity of protective enzymes, and increase plant drought tolerance (Liu 2015) .

2、Brassinolide alleviated drought stress faced by bulbil formation of

Abstract Drought occurs frequently because of global climate change. The involvement of brassinolide (BR) in regulating plant tolerance to stress is one of its research hotspots. Bulbil formation and development of Pinellia ternata is the key to its yield formation.

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Exogenous application of 24-epibrassinolide can alleviate oxidative damage, improve photosynthetic capacity, and regulate carbon and nitrogen assimilation, thus improving the tolerance of grapevine (Vitis vinifera L.) to drought stress.

Brassinolide enhances maize production under drought by modulating

Brassinolide (BR) can be expected to mitigate the drought stress in crops during production. However, it remains unclear whether the BR can consistently enhance crop yield and water productivity under both full irrigation (FI) and deficit irrigation (DI).

Brassinolide improves the dought resistance of maize seedlings

In this paper, we studied the regulation of 24-epibrassinolide, 28-homobrassinolide and 28-epihombrassinolide on drought resistance of maize seedlings under drought stress. The effects of drought stress on maize seedlings could be alleviated by three kinds of brassinolide treatment sprays. Among them, 28-homobrassinolide was most effective in ...

Brassinolide Application Improves the Drought Tolerance in

Brassinolides (BRs) are naturally occurring substances, which modulate plant growth and development events and have been known to improve the crop tolerance to abiotic stresses.

Evaluation of Effect of Brassinolide in Brassica juncea Leaves under

This study aimed to evaluate the effect of brassinolide on physio-biochemical amendment in two contrasting cultivars (drought-tolerant RH 725, and drought-sensitive RH 749) of Brassica juncea under drought stress.

Abscisic acid and brassinolide combined application synergistically

Brassinolide (BR) is closely associated with cell enlargement and division, and can regulate antioxidant mechanism and photosynthetic capacity to improve plant stress-resistance (Creelman and Mullet, 1997).

Brassinolide Application Improves the Drought Tolerance in

Brassinolides (BRs) are naturally occurring substances, which modulate plant growth and development events and have been known to improve the crop tolerance to abiotic stresses.

Brassinosteroids induced drought resistance of contrasting drought

Our results demonstrate drought-responsive molecular mechanisms and provide valuable information regarding candidate gene resources for drought improvement in maize crop.

Brassinolide is a plant growth regulator with multiple functions, including promoting cell division, increasing chlorophyll content, and enhancing photosynthetic efficiency. In agricultural production, brassinolide is widely used to improve crop drought resistance. Below is a detailed explanation of how brassinolide achieves this:

1. Effects on Cell Division

Brassinolide promotes cell division and increases cell numbers. Under drought conditions, insufficient water supply in plants hinders cell division. By stimulating cell division and expanding cell counts, brassinolide enhances the plant's ability to withstand drought.

2. Effects on Chlorophyll Content

Chlorophyll is critical for photosynthesis, and its content directly impacts photosynthetic efficiency. Drought often reduces chlorophyll levels, lowering photosynthetic capacity and weakening the plant’s energy acquisition. Brassinolide increases chlorophyll content and photosynthetic efficiency, thereby strengthening drought resistance.

3. Effects on Photosynthetic Efficiency

Photosynthesis is the primary energy source for plant growth, and its efficiency determines growth rate and yield. Drought-induced water scarcity reduces photosynthetic efficiency, slowing growth and lowering yields. Brassinolide improves photosynthetic performance, enabling plants to capture more energy under limited water conditions, thus boosting drought tolerance.

4. Effects on Plant Hormone Balance

Plant hormones regulate growth and development. Drought can disrupt hormonal balance, stunting growth. Brassinolide modulates hormone equilibrium, supporting normal development and enhancing drought resilience.

5. Effects on Antioxidant Systems

Drought triggers oxidative stress, damaging cells. Brassinolide enhances antioxidant capacities, reducing free radical formation and protecting cells from damage, thereby improving drought resistance.

6. Effects on Root System Structure

Roots are key for water and nutrient uptake. Drought may damage roots, impairing absorption. Brassinolide stimulates root development, strengthening water and nutrient uptake, which bolsters drought resistance.

7. Effects on Stomatal Regulation

Stomata control water vapor loss. Drought can disrupt stomatal function, hindering transpiration. Brassinolide regulates stomatal opening and closing, optimizing water use under drought, thus improving resistance.

8. Effects on Disease Resistance

Drought-stressed plants are prone to diseases. Brassinolide enhances disease resistance, reducing infection risks and minimizing water loss from pathogens, thereby aiding drought tolerance.

9. Effects on Soil Microbial Activity

Soil microbes play vital ecological roles. Drought suppresses microbial activity, leading to nutrient loss. Brassinolide activates soil microorganisms, promoting nutrient cycling and supporting plant drought resistance.

10. Effects on Root Exudates

Root exudates mediate plant-soil interactions. Drought alters exudate composition, disrupting symbiosis. Brassinolide adjusts exudate profiles, fostering beneficial plant-soil relationships and improving drought resilience.

Brassinolide enhances drought resistance through multiple mechanisms: stimulating cell division, increasing chlorophyll, boosting photosynthesis, balancing hormones, strengthening antioxidants, promoting root growth, regulating stomata, improving disease resistance, activating soil microbes, and modulating root exudates. As a result, it is recognized as an effective tool for agricultural drought mitigation.