Related Experiment Video
Updated: Mar 5, 2026

Investigating Interactions Between Histone Modifying Enzymes and Transcription Factors in vivo by Fluorescence Resonance Energy Transfer
Published on: October 14, 2022
GmILPA1, Encoding an APC8-like Protein, Controls Leaf Petiole Angle in Soybean
Jinshan Gao1, Suxin Yang2, Wen Cheng1
1Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China (J.G., S.Y., J.L., X.Y., X.F.); University of Chinese Academy of Sciences, Beijing 100049, China (J.G.); Maize Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China (W.C.); Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China (Y.F.); Department of Horticulture, Michigan State University, East Lansing, Michigan 48824 (N.J.); and Department of Agronomy, Purdue University, West Lafayette, Indiana 47907 (J.M.).
Researchers identified Glycine max Increased Leaf Petiole Angle1 (GmILPA1), a gene regulating soybean leaf petiole angle. Mutations in GmILPA1 enlarge leaf angles by affecting motor cell proliferation, offering a target for improving soybean architecture.
Area of Science:
- Plant Biology
- Genetics
- Agricultural Science
Background:
- Leaf petiole angle (LPA) is a key trait influencing canopy structure, photosynthesis, and yield in legumes.
- The genetic underpinnings of LPA regulation are not well understood.
Purpose of the Study:
- To identify and characterize genes controlling leaf petiole angle in soybean (Glycine max).
- To elucidate the molecular mechanism by which GmILPA1 regulates LPA.
Main Methods:
- Gene identification and isolation of GmILPA1.
- Analysis of a gamma ray-induced mutant (Gmilpa1) with altered LPA.
- Gene expression analysis and protein interaction studies.
Main Results:
- GmILPA1 encodes an APC8-like protein, a subunit of the anaphase-promoting complex/cyclosome.
- A deletion in GmILPA1 leads to enlarged LPAs associated with reduced motor cell proliferation.
- GmILPA1 is expressed in leaf primordia and promotes pulvinus cell growth and division.
- GmILPA1 interacts with GmAPC13a.
Conclusions:
- GmILPA1 plays a crucial role in modulating soybean leaf petiole angle.
- Understanding GmILPA1's function provides a genetic basis for modifying soybean plant architecture.
- Targeting GmILPA1 offers potential for enhancing soybean yield through optimized plant design.
Related Concept Videos
Light Acquisition
Cell Signaling in Plants
Cell Adhesion in Plants
Pectins are complex heteropolymers mainly composed of negatively-charged α-D-glucopyranosyl uronic acid and some neutral glycosyl residues such as α-L-rhamnopyranose, α-L-arabinofuranose,...
Adaptations that Reduce Water Loss
Microtubule Associated Motor Proteins

