Post-Flowering Photoperiod Sensitivity of Soybean in Pod-Setting Responses

Overview

Journal Biology (Basel)

Publisher MDPI

Specialty Biology

Date 2024 Nov 27

PMID 39596823

Authors

Zhihui Sun

Limei Yuan

Yulin Wang

Ran Fang

Xiaoya Lin

Haiyang Li

Liyu Chen

Yichun Wu

Xin Huang

Fanjiang Kong

Baohui Liu

Sijia Lu

Lingping Kong

Affiliations

Soon will be listed here.

Abstract

The development of soybean () is regulated by the photoperiod, with genes related to photoperiod sensitivity primarily focused on the flowering time. However, their roles in post-flowering reproductive development and the mechanisms by which the photoperiod affects them are not yet determined. In this study, we found that pod formation is sensitive to the photoperiod. Long-day conditions tended to extend the time from flowering to pod formation, and the first wave of flowers tended to fall off. Additionally, the photoperiod affected the pistil morphology; under short-day conditions, the stigma had a curved hook-like structure that facilitated better interaction with the filaments when pollen was released, ultimately influencing the timing of pod formation. Photoperiod-insensitive mutants, lacking family and (EC) genes, showed no difference in the pod formation time under long-day or short-day conditions. Hormone content analysis and transcriptome data analysis indicated that various hormones, reactive oxygen species (ROS) burst pathway signals, and the application of sucrose solution in vitro might influence floral organ abscission.

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