A new plant hormone signal transduction mechanism reveals a new mechanism for the transduction of one-legged golden ester signals.

One-legged golden ester is a new type of plant hormone, which plays a key role in plant plant construction, regulating plant growth and development, as well as the ability to adapt to adversity such as drought, low phosphorus and low nitrogen, which is of great value to crop improvement and increase yield.
but the hormone also stimulates the germination of parasitic weed seeds, causing severe crop yields.
Therefore, the refore, the study of the signal ingeste signal of monopod has important scientific significance and application value. On June 11,
, Li Jiayang, a member of the Chinese Academy of Sciences and a researcher at the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences, published a research paper in Nature entitled Qual al-Regulation of Strigolactone Signalling in Arabidopsis, which systematically identified the early response genes of the proposed nan mustard single-footed golden ester, and clarified the regulatory branch ingestofers of the uni-foot editing. The number, leaf shape and the molecular mechanism of anthocyanin accumulation broke through the bottleneck of the study of the signaling pathway of monopod, and further found that SMXL6,7,8 could regulate itself as a transcription factor, and as a transcription inhibitory protein regulatory branching and other developmental processes, revealing a new plant hormone signal transduction mechanism.
Li Jiayang's team has long been engaged in the synthesis and signal transduction of one-legged golden esters, and found that one-legged golden esters can induce its receptors D14 and F-box protein D3/MAX2 as well as inhibit the protein D53/SMXL2,6,7,8 to form a complex , start signal transduction, induce D53/SMXL2, 6,7,8 protein degradation mediated by ubiquitinmodification modification, remove transcription inhibition of downstream genes, regulate plant strains and crop yields (Lin et al., 2009, Plant Cell; Jiang et al., 2013, Nature; Wang et al., 2015, Plant Cell; Song et al., 2017, Cell Research; Duan et al., 2019, PNAS; Wang et al., 2020, Plant Cell.
recent, a study with collaborators found that the one-legged golden ester pathway is widely used in the rice "green revolution" and is important for stable rice production and wide fitness (Wang et al., 2020, Mol Plant).
however, only a small number of one-legged gold enderate early response gene has been identified, far from explaining the one-legged golden ester in plant growth and development in many aspects of the important regulatory role;
to break through the bottleneck in the study of the transduction of the one-legged golden ester signal, the study synthesized four of GR24's isomers, found that GR244DO was able to specifically activate the transduction of the adhesichoke-in-the-inner gene in the mono-leg gene, and systematically identified 401 one-legged gold ester early response genes.
studies have found that uni-legged glycels inhibit branching by activating the expression of BRC1, thereby increasing the content of ABA in side buds, promoting leaf elongation by increasing the expression of TCP1, and by activating the expression of PAP1, PAP2, MYB113 and MYB114, and promoting the synthesis and accumulation of anthocyanin synthesis genes DFR, ANS and TT7.
this study proposes a new mechanism for the transfer of plant hormone signals, which provides a new way of thinking for exploring the mechanism of hormone action. The transcription altimeter signaling network revealed by
study is of guiding significance to the comprehensive analysis of the molecular mechanism of one-legged steryl sertose regulating plant growth and development and environmental adaptation, revealing the mechanism of plant and bush fungus symbiosis, and then cultivating high-yielding, high-yielding, high-efficiency and parasitic crops.
, Dr. Wang Lei and Associate Researcher Wang Bing are the co-authors of the paper, and Li Jiayang and Wang Bing are co-authors of the communication.
Ph.D. Of Plant Hormone Platform, Dr. Yu Jinfang, Professor Xiong Guosheng of Nanjing Agricultural University, and Yang Jun, researcher of the Shanghai Institute of Organic Chemistry of the Chinese Academy of Sciences, participated in the study.
the research was funded by the National Natural Science Foundation of China and the Chinese Academy of Sciences.
Source: Institute of Genetics and Developmental Biology.