The study group of the scorched rain bell has made new progress in the analysis of the control molecular module of wheat spike type

is one of the most important food crops in the world and plays an important role in China's food security. How to improve wheat yield is a hot and difficult problem in wheat research and breeding for a long time. Spike-type patterns such as wheat spike branching are important determining factors in the yield of a single plant, and are also one of the key agrochesics in wheat selection and breeding. However, wheat is heterogeneic hexalyx, the genome is large and complex, about 34 times the rice, 16 times the soybean, 7 times the corn, 3 times the barley, and the conversion difficulties, greatly increased the difficulty of wheat research. Compared with the research of rice, corn and barley, the research on wheat spike regulation at the molecular level is relatively blank.
The Research Group of The Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences, in cooperation with the Research Group of Wang Feng of the Agricultural University of China, studied the gene expression regulation network of the development of the young spike by using the micro-core seed mass of wheat selected by the previous people, and verified the role of the key factors in the regulation of spike number through the strategies of transcription group association analysis and gene co-expression network analysis. The results of the study obtained a number of core co-expression modules related to the number of spike grains. The researchers analyzed the expression of 10 of these genes and found that the expression gene TaTFL1 can prolong the differentiation time of the young spike, increase the number of small spikes (as shown above), the number of small flowers and the number of spikes, and the over-expression gene TapAP2, TaVRS1 can shorten the differentiation time of the young spike, reduce the number of small spikes, the number of small flowers and the number of spikes. The above results provide a theoretical basis for researchers to further analyze the genetic regulation of wheat spike development, and provide preliminary technical verification for the effective use of molecular modules related to spike number.
results were published online August 14, 2017 on
(DOI: 10.1104/pp.17.00694). Wang Yuange, a postdoctoral student in the Zhuo Yuling Research Group, and a graduated Ph.D. were born in Hao Hao as co-authors of the article. Co-author of the study, Zhu Yuling Researcher and Professor Wang Zhifeng, Tong Yiping Researcher and Gao Caixia Researcher of the Institute of Genetic Development of the Chinese Academy of Sciences, participated in the study. The research has been funded by the Chinese Academy of Sciences molecular module design and breeding pilot science and technology special, genetically modified special project and the national key laboratory of plant genomics. (Source: Science.com)