Small Papillae Regulated by SPD25 are Critical for Balancing Photosynthetic CO₂ Assimilation and Water Loss in Rice.

ABSTRACT:

Background

The leaf epidermis plays an important role in the transmission of light and the regulation of water and gas exchange, which influences the photosynthesis of mesophyll cells. Small papillae (SP) are one of the important structural elements of the leaf epidermis. The mechanism of the effect that small papillae have on rice leaf photosynthetic performance remains unclear.

Results

In this study, a small papilla deficient 25 (spd25) mutant was isolated from japonica rice Longjin1. Small papillae were absent on the adaxial and abaxial leaf surfaces of the spd25 mutant and the silicon and cuticular wax content in the spd25 mutant leaves decreased. Map-based cloning and functional analysis revealed that SPD25, encoding a guanine nucleotide exchange factor for Rop, is a no

SUBMITTER: Zhu L 

PROVIDER: S-EPMC10716080 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature