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2025 ; 26
(1
): 950
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Phenomics, RNA sequencing and weighted gene co-expression network analysis
reveals key regulatory networks and genes involved in the determination of seed
hardness in vicia sativa
#MMPMID41131479
Wang H
; Wu Z
; Zuo Y
; Yan X
; Zou B
; Chen Y
; Yuan Z
; Du Z
BMC Genomics
2025[Oct]; 26
(1
): 950
PMID41131479
show ga
BACKGROUND: Wild-type Vicia sativa L. exhibits superior agronomic traits,
including high yield, elevated crude protein content, improved reproductive
efficiency, and tolerance to nutrient-poor soils, positioning it as a valuable
genetic resource for crop improvement. However, its utilization in germplasm
enhancement is severely hindered by seed hardness, the underlying physiological
and molecular regulatory mechanisms of which remain poorly understood. RESULTS:
Phenomic analyses have revealed that wild-type V. sativa seeds exhibit
significantly higher hardness indices and lignin content compared to cultivated
varieties, whereas cultivated seeds display elevated levels of soluble sugars,
soluble proteins, and starch. During the same developmental stage, cultivated
seeds demonstrate notably larger diameters than their wild-type counterparts.
Conversely, wild-type seeds possess significantly thicker palisade layers and
higher palisade-layer-to-seed-coat thickness ratios. Notably, the cuticle of
wild-type seeds is markedly thicker. The SEM further revealed that cultivated
varieties exhibit significantly wider and longer hilums, while wild-type seeds
display deeper micropyles. WGCNA identified three key candidate genes,
TRINITY_DN3402_c0_g1, TRINITY_DN13607_c0_g1, and TRINITY_DN6606_c0_g1, involved
in seed hardness regulation. Expression pattern analysis further revealed that
these three genes showed significantly higher transcript levels in the wild
hard-seeded genotype V. sativa W12 compared to the cultivated genotype V. sativa
W30. CONCLUSIONS: Our study elucidates the physical determinants and key
candidate genes underpinning seed hardness in V. sativa, thereby providing
critical insights to advance crop improvement.