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Related Experiment Video

Updated: May 29, 2026

Establishing Pollination Requirements in Japanese Plum by Phenological Monitoring, Hand Pollinations, Fluorescence Microscopy and Molecular Genotyping

Establishing Pollination Requirements in Japanese Plum by Phenological Monitoring, Hand Pollinations, Fluorescence Microscopy and Molecular Genotyping

Published on: November 9, 2020

Petal Development in Lotus japonicus.

Lin Weng¹, Zhaoxia Tian¹, Xianzhong Feng¹

¹National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, ChinaKey Laboratory of Plant Stress Research of Shandong Province, College of Life Sciences, Shandong Normal University, Jinan 250014, ChinaState Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.

Journal of Integrative Plant Biology

|September 10, 2011

Summary

This summary is machine-generated.

Legume petal development involves dorsoventral (DV) and organ internal (IN) asymmetry. TCP genes regulate petal identity along the DV axis by controlling MIXTA-like gene expression, guiding petal shape.

Keywords:

CYC‐like TCP genes Lotus japonicus MIXTA‐like genes epidermal cell petal

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Area of Science:

Plant biology
Developmental biology
Molecular genetics

Background:

Petal shape and size in legumes are regulated by dorsoventral (DV) and organ internal (IN) asymmetric mechanisms.
The specific molecular mechanisms governing petal development in legumes remain largely uncharacterized.

Purpose of the Study:

To investigate the molecular mechanisms controlling petal development along the floral DV axis in Lotus japonicus.
To elucidate the interplay between DV and IN mechanisms at cellular and molecular levels during petal development.

Main Methods:

Detailed morphological analysis of petal development in wild-type and mutant Lotus japonicus, defining 13 developmental stages.
Examination of epidermal micromorphology and cell differentiation across petal domains.
Analysis of differential gene expression for TCP and MIXTA-like genes in petal domains at specific developmental stages.

Main Results:

Petal development was systematically staged from initiation to maturity.
Distinct epidermal cell domains were identified in mature petals, with differentiation occurring by stage 9.
TCP and MIXTA-like genes showed differential expression patterns correlating with petal domains and developmental stages.

Conclusions:

Dorsoventral (DV) and organ internal (IN) mechanisms interact throughout petal development, influencing domain elaboration and final petal shape.
TCP genes play a crucial role in establishing petal identity along the DV axis by regulating MIXTA-like gene expression.