 Home > Food News > Food Articles > From cross-pollination to self-pollination, what has the shape of the flower gone through?

From cross-pollination to self-pollination, what has the shape of the flower gone through?

 Last Update: 2021-08-13
 Source: Internet
 Author: User

Tags

transformation protein

astrocytoma survival rate

Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com

From cross-pollination to self-pollination, what has the shape of the flower gone through?

From cross-pollination to self-pollination, what did the flower morphology experience? From cross-pollination to self-pollination, what did the flower morphology experience?

SE3.
1 regulates tomato stigma extension and self-cross rate.
Photo courtesy of Central China Agricultural University

SE3.
1 Regulating Tomato Stigma Extension andSelfing Rate Photo courtesy of Central China Agricultural University SE3.
1 Regulating Tomato Stigma Extension and Selfing Rate Photo courtesy of Central China Agricultural University

The exposure of tomato stigma to indentation is the evolution of Style2.
1 and SE3.
1 in two steps, courtesy of Huazhong AgriculturalUniversity.

Tomato stigma is exposed to a retracted and SE3.
1 Style2.
1 two steps successively EvolutionHuazhongnongda contributor tomato stigma is exposed to a retracted and SE3.
1 Style2.
1 two steps successively Evolution Huazhongnongda contributor Huazhongnongda For picture

Recently, the tomato team led by Professor Ye Zhibiao of Huazhong Agricultural University identified a new gene that controls the extent of tomato stigma extension, namely Stigma Exsertion 3.
1 (SE3.
1 ) , which further revealed the transformation process of self-pollination in tomato domestication and improvement.
The research results were published online in " The Plant Cell " ( The Plant Cell )
.

) The Plant Cell )

Plant evolution is closely related to its pollination methods
.

The transition from cross-pollination to self-pollination is one of the most common ways of evolution in plants.

The team used a diverse population of 277 wild and domesticated tomato materials to quantify anther length and pistil length, and determine the quantitative variation characteristics of stigma extension
.

Compared with wild materials, the extent of stigma extension of cherry tomatoes and large-fruit tomatoes was reduced, indicating that tomato domestication and improvement were accompanied by a significant decrease in the extent of stigma extension

Through genome-wide association analysis, this study identified a site that was significantly related to the extent of stigma extension
.

The team obtained a gene SE3.

In the tomato population, the mutation of SE3.
1C to SE3.
1T will cause the translation to terminate prematurely, and the functional protein cannot be formed, which will cause the stigma to shrink inside the anther tube in cultivated tomatoes
.

The functional complementation experiment proved that SE3.

They found that in the process of tomato domestication and improvement, SE3.
1 was selected
.

Style2.

In summary, the transformation of tomato stigma from exposed to indented was achieved by Style2.
1 and SE3.
1 in two steps respectively.
The first step was the mutation of Style2.
1 which caused the stigma to be exposed to flush with the top of the anther tube.
, The second step is to complete the transformation of the stigma from flush with the top of the anther tube to retracted inside the anther tube by the mutation of SE3.
1
.

This research provides a good framework for exploring the evolution of tomato stigma extension, and provides a theoretical basis for the selection and breeding of stigma shrinkage materials for modern cultivated tomatoes

The research was funded by the National Natural Science Foundation of China and the National Key Research and Development Program
.

(Source: China Science News Li Chen)