The GmILPA1 gene that controls the development of soybean leaf pillows and regulates the angle of the leaf handle.

The ideal strain type is an important representative agro-artistic nature of modern crop varieties.
the angle of soybean leaf handle affects the canopy structure, the efficiency of photo-cooperation, and ultimately the yield, which is one of the important agro-artistic symptoms of soybean, but the regulation mechanism of regulating the angle of leaf handle is not clear.
Researchers from the Soybean Molecular Design And Breeding Key Laboratory of the Northeast Institute of Geography and Agricultural Ecology of the Chinese Academy of Sciences, together with foreign experts from the Chinese Academy of Agricultural Sciences and the International Team for Soybean Molecular Design And Breeding, identified and isolated the GmILPA1 gene that controls the angle of the leaf handle of soybean leaf pillow development, a finding that has important theoretical guiding value for the use of regulating the angle of soybean leaf handles, cultivating and designing ideal soybean strains.
the study identified and isolated the GmILPA1 gene that controls the angle of soybean leaf shanks by analyzing the Gmilpa1 mutants with increased soybean leaf handle angles.
the gene encodes the APC8-like protein, which can interact directly with GmAPC13a and travel through the APC complex.
study found that gamma-ray mutagenics led to the loss of the 4th exon and flank sequence of the GmILPA1 gene, abnormal leaf pillow development of mutants, increased leaf handle angle (see figure);
A bean 12 wild soybean leaf pillow.
BGmipla1 mutant leaf pillow.
increase in gene expression levels in CGMILPA1 was significantly negatively related to the angle of the leaf handle.
The GmILPA1 gene is mainly expressed in the cells of the leaf progenitic base, and the morphological composition of the leaf pillow is controlled by promoting cell proliferation and differentiation.
This study not only reveals for the first time the genetic mechanism of regulating the angle of the leaf handle of the structure of the soybean leaf pillow, but also proves that the higher the expression level of the GmILPA1 gene in different soybean varieties, the smaller the angle of the leaf handle, and the significant negative correlation between the two.
research results are of great significance for improving soybean strain type by optimizing the angle of leaf handle.
The findings were published online March 23 in the international journal Plant Physiology, with Gao Jinshan, Ph.D., of the Northeast Institute of Geography, as the first author of the paper, and researchers Feng Xianzhong, Yang Suxin and Professor Ma Yixin as the authors of the paper.
research was supported by projects such as the National Key Research and Development Program, the Chinese Academy of Sciences' 100-person Program and the Innovation International Team.
paper information: Jinshan Gao, Suxin Yang, Wen Cheng, Yongfu Fu, Jiantian Leng, Xiaohui Yuan, Ning Jiang, Jianxin Ma, Xianzhong Feng (2017) GmILPA1, Encoding an APC8-like Protein, Controls Leaf Petiole Angle in Plant Physiology: DOI 10.1104/pp.16.0074.