1、Twenty Years of Brassinosteroids: Steroidal Plant Hormones Warrant Better Crops for the XXI Century

Only 20 years passed between the discovery of brassinolide, the first member of the series, and the application of brassinosteroids in agriculture. Although the other plant hormones have been studied for a much longer period, there has not been similar development.

2、Q&A: what are brassinosteroids and how do they act in plants?

A full elucidation of brassinosteroid signalling events and their integration with other signalling pathways will enable brassinosteroid to be applied in agriculture.

3、Brassinosteroid action in flowering plants: a Darwinian perspective

This application resulted in a prolonged dormancy period, an enhancement in ethylene production, and a higher content of abscisic acid in the buds. The cytological basis of these EB-effects in the tubers was also elucidated by the authors.

Application of Brassinosteroid Mimetics Improves Growth and Tolerance of Maize to Nicosulfuron Toxicity

To investigate the effects of brassinosteroid mimetics on the growth of NSF-stressed plants, we treated maize seedlings with bikinin and brazide at 10 µM prior to NSF treatment, and epibrassinolide (EBL) as a positive control.

The cyclophilin ROC1 links phytochrome and cryptochrome to brassinosteroid sensitivity

We propose a model where perception of light by phyA, cry1 or phyB activates ROC1 (at least in part by enhancing its expression). This in turn reduces the intensity of brassinosteroid signalling and fine-tunes seedling de-etiolation. Light triggers profound changes in seedling growth and development upon emergence of the shoot from the soil.

CYP72B1 Inactivates Brassinosteroid Hormones: An Intersection between Photomorphogenesis and Plant Steroid Signal Transduction

We propose a model in which Arabidopsis seedling development switches from dark-grown development (skotomorphogenesis) to light-grown development (photomorphogenesis) in part by rapid modulation of brassinosteroid sensitivity and levels.

Effects of brassinosteroids on the plant responses to environmental stresses

Brassinosteroid metabolism has long been known to be altered in plants responding to abiotic stresses and to undergo profound changes in plants interacting with bacterial, fungal and viral pathogens.

Brassinosteroid

Brassinosteroid-induced enhancement of enzymatic and non-enzymatic antioxidant defense in maize under Co stress. Activities of catalase (A, B), ascorbate peroxidase (C, D), peroxidase (E, F), superoxide dismutase (G, H), reduced glutathione (I, J), and glutathione reductase (K, L) in shoot and root tissues, respectively.

Brassinosteroids and photosynthesis

BRs could prevent e.g. loss of photosynthetic pigments by an activation of enzymes participating in chlorophyll biosynthesis or an induction of their synthesis.

Functional characterisation of brassinosteroid receptor MtBRI1 in Medicago truncatula

Brassinosteroids (BRs) are phytohormones that play important roles in regulating plant growth, development, and stress responses. It is crucial to adjust and maintain appropriate levels of...

Brassinosteroid is a plant growth regulator primarily used to promote plant growth, enhance stress resistance, increase yield, and improve quality. During the growth of corn seedlings, timely application of brassinosteroid can significantly improve disease resistance and adaptability, reduce the incidence of pests and diseases, and boost both yield and quality.

I. Early Growth Stage of Corn Seedlings (Seedling Period)

1. From Sowing to Emergence: This is the critical early stage of corn seedling growth and the optimal period for brassinosteroid application. At this stage, young corn seedlings are sensitive to environmental changes and vulnerable to pests and diseases. Applying brassinosteroid effectively prevents and controls pests and diseases, safeguarding healthy seedling growth.

2. Application Method: After seedlings emerge, apply brassinosteroid based on soil fertility and crop growth. It is recommended to start application when seedlings develop 3-5 true leaves. Use 10-20 grams of brassinosteroid per mu (0.06-0.13 hectares), dilute with water, and spray evenly on the roots and stems of the seedlings.

II. Growth Stages of Corn Seedlings (Jointing to Maturity)

1. Jointing Stage: During jointing, root systems develop rapidly, and nutrient demands increase. Applying brassinosteroid promotes root growth, enhances nutrient absorption, and strengthens stress resistance and pest/disease resilience.

2. Maturing Stage: In the later stages of maturation, brassinosteroid reinforces disease resistance and stress tolerance, improving yield and quality. It also accelerates grain filling and ripening, boosting overall productivity.

III. Key Considerations

1. Dosage Adjustment: Optimal dosages vary by region, soil fertility, and crop conditions. Adjust applications based on local context to achieve the best results.

2. Combination with Fertilizers: Brassinosteroid can be mixed with nitrogen, phosphorus, or potassium fertilizers to improve nutrient efficiency. excessive use may lead to excessive vegetative growth, compromising quality.

3. Avoid Mixing with Pesticides: Brassinosteroid may interact with certain pesticides, reducing efficacy or causing side effects. Avoid combining with pesticides to prevent adverse impacts on crops.

4. Environmental Protection: While beneficial for crops, excessive or improper use of brassinosteroid may harm the environment and human health. Follow guidelines to minimize ecological risks.

Timely application of brassinosteroid plays a vital role in corn seedling development. During the early seedling stage, it prevents pests and diseases, ensuring healthy growth. From jointing to maturity, it strengthens roots, enhances nutrient absorption, and improves stress resistance. To maximize benefits, control dosage, avoid mixing with pesticides, and prioritize environmental safety. Scientific application of brassinosteroid can significantly increase corn yield and quality, supporting agricultural productivity.