Research revealed the mechanism model of the formation of the spiral fruit pod

Recently, Ge Liangfa, a professor of Forestry and Scenic Garden of South China Agricultural University, cooperated with Huang Wei, a professor of the School of Life Sciences. The study revealed the mechanism for the formation of the MTKIX8 regulating the shape of the gutranis.Related results online published in “Botanical Physiology” (Plant PhysiologyTo.

Different shapes of fruit pods are built into models.(Note: vs, abdominal sutures; DS, back stitching) Interviewee Conferry

Pods are the fruit developed by the heart skin, and it is also a unique fruit unique to the bean family, which can protect the seeds.In the process of long -term evolution, pods have evolved in various forms to adapt to different seed communication mechanisms.According to the morphological characteristics, fruit pods can be roughly divided into three categories, namely straight fruit pods, spiral fruit pods and distorted fruit pods.Although the morphological studies of pipe spiral fruit pods have been reported, the relevant genetic mechanisms are not clear.Tortex is a plant -based plant, which has natural spiral fruit pods. It is an ideal material for studying the spiral of plant organs.

In the process of screening with organ size regulation factor Big SEEDS 1 (BS1), he obtained a transcription factor MTKix8 that interacts with BS1.MTKIX8 is a homologous gene of Arabili ATKIX8/9, Tomato SLKIX8/9, Soybean GMKIX8/9, Pea PSBIO, and LJBIO.The gene is widely involved in the size of the organs of the quilt plant and the inadequate development of the petals.

Researchers have screened two in the Tortee 体 mutant librarymtkix8In the process of analogy, its pods cannot form a rule and dense spiral structure during development, and the handling will also change.Through tissue cytology research, researchers foundmtkix8The number, form and size of the cells in the abdominal suture area of mutations have changed significantly.Further studies have shown that the expression of MTKIX8 in the stitching area of the fruit pod is significantly higher than that of the back stitching area, and the final form of the fruit pod is determined by coordinating the growth rate of the abdominal suture and back stitching area.

The study not only discovered the new features of MTKIX8, but also revealed the mechanism model formed by the puppet pod.