相关实验视频

Updated: Sep 17, 2025

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response

Published on: April 17, 2016

DcMYB30通过调节黄类生物合成来对干旱耐受性Dendrobium catenatum的负面作用

Chenning Zhao¹, Hongyan Hou², Junxia Wu²

¹National Key Laboratory for Development and Utilization of Forest Food Resources, Zhejiang A&F University, Hangzhou, 311300, China; Provincial Key Laboratory for Non-wood Forest and Quality Control and Utilization of Its Products, Zhejiang A&F University, Hangzhou, 311300, China.

Plant physiology and biochemistry : PPB

|July 3, 2025

概括

干旱压力会损害Dendrobium catenatum的生长,并降低黄. MYB转录因子DcMYB30负面调节黄类生物合成,影响干旱耐受性.

科学领域:

植物生物学植物生物学
分子生物学分子生物学
遗传学遗传学是一种遗传学.

背景情况:

干旱压力显著限制了植物生长和产量.
MYB转录因子对植物应激反应至关重要,但它们在Dendrobium catenatum中的作用,特别是两重复的MYB,尚未得到研究.
类动物对干旱的反应,包括多糖和黄糖的变化,需要进一步研究.

研究的目的:

在Dendrobium catenatum中全面分析MYB基因家族.
为了研究两重复MYB蛋白质在干旱应激反应中的功能.
阐明MYB基因在干旱条件下的黄类生物合成和积累中的调节作用.

主要方法:

在Dendrobium catenatum中鉴定和对174个MYB基因进行基因分析.
表达模式分析和共同表达分析以确定关键的MYB基因.
在Nicotiana benthamiana和Dendrobium catenatum中进行过渡性表达测试,以确定基因功能.

主要成果:

严重的干旱压力抑制了D. catenatum的生长,并降低了多糖和黄含量.
一个R2R3-MYB基因,DcMYB30,被确定为干旱反应和黄化合物合成的关键调节者.
在核中定位的DcMYB30,因干旱压力而降低调节,通过降低调节关键酶编码基因 (例如,4CL) 来降低调节负面调节的黄类生物合成.

结论:

在干旱压力下的Dendrobium catenatum中,DcMYB30在负面调节黄类生物合成和积累方面发挥着至关重要的作用.
这些发现提供了关于两重复MYB转录因子在植物应激反应和黄类代谢中的作用的见解.
DcMYB30的监管机制为改善D.catenatum.干旱耐受性提供了潜在的目标.

关键词:

丹朵菌体的连锁体是什么干旱造成的压力是干旱.黄类生物合成转录因子MYB转录因子

更多相关视频

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

Published on: October 4, 2019

Inducing Hairy Roots by Agrobacterium rhizogenes-Mediated Transformation in Tartary Buckwheat Fagopyrum tataricum

Inducing Hairy Roots by Agrobacterium rhizogenes-Mediated Transformation in Tartary Buckwheat Fagopyrum tataricum

Published on: March 11, 2020

相关概念视频

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.

Introduction to Plant Diversity

Introduction to Plant Diversity

From Water to Land

Responses to Drought and Flooding

Responses to Drought and Flooding

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.

Regulation of Transpiration by Stomata

Regulation of Transpiration by Stomata

During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.

Responses to Salt Stress

Responses to Salt Stress

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.