Open AccessHormone analysis and candidate genes identification associated with seed size in Camellia oleifera
Author(s) -
Ke Ji,
Qiling Song,
Xinran Yu,
Chuanbo Tan,
Linkai Wang,
Le Chen,
Xiaofeng Xiang,
Wenfang Gong,
Deyi Yuan
Publication year - 2022
Publication title -
royal society open science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 51
ISSN - 2054-5703
DOI - 10.1098/rsos.211138
Subject(s) - camellia oleifera , biology , botany , horticulture
Camellia oleifera is an important woody oil species in China. Its seed oil has been widely used as a cooking oil. Seed size is a crucial factor influencing the yield of seed oil. In this study, the horizontal diameter, vertical diameter and volume ofC. oleifera seeds showed a rapid growth tendency from 235 days after pollination (DAP) to 258 DAP but had a slight increase at seed maturity. During seed development, the expression of genes related to cell proliferation and expansion differ greatly. Auxin plays an important role inC. oleifera seeds;YUC4 andIAA17 were significantly downregulated. Weighted gene co-expression network analysis screened 21 hub transcription factors forC. oleifera seed horizontal diameter, vertical diameter and volume. Among them,SPL4 was significantly decreased and associated with all these three traits, whileABI4 andYAB1 were significantly increased and associated with horizontal diameter ofC. oleifera seeds. Additionally,KLU significantly decreased (2040-fold). Collectively, our data advances the knowledge of factors related to seed size and provides a theoretical basis for improving the yield ofC. oleifera seeds.