OsPIN2 is involved in OsSPL14/17-inhibited tiller bud outgrowth in response to phosphate deficiency in rice

Feng, Fan; Guo, Xiaoli; Zhu, Xiuli; Hu, Yibo; Chen, Yake; Sun, Hong; Li, Junzhou; Zhao, Chenyun; Sun, Huwei; Zhao, Quanzhi

doi:10.1016/j.envexpbot.2023.105297

Cited by 3 publications

(1 citation statement)

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“…Several genes and transcriptional co-regulators critical for the tiller bud normal formation in rice have been identified by genetic studies of induced mutants [16][17][18][19][20], and the molecular mechanisms behind the tiller bud normal formation were gradually clear [21][22][23][24][25]. MONOCULM 1 (MOC1) is the first cloned gene and characterized as a key regulator in controlling tiller bud normal formation in rice; MOC1 encodes a transcriptional regulator, belonging to the GRAS family nuclear protein, and MOC1-overexpressing plants showed higher-order tiller buds, while the loss-of-function mutant exhibits only one main culm without any tillers [4].…”

Section: Introductionmentioning

confidence: 99%

The QTL and Candidate Genes Regulating the Early Tillering Vigor Traits of Late-Season Rice in Double-Cropping Systems

Wu,

Zhang,

You

et al. 2024

IJMS

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Rice effective panicle is a major trait for grain yield and is affected by both the genetic tiller numbers and the early tillering vigor (ETV) traits to survive environmental adversities. The mechanism behind tiller bud formation has been well described, while the genes and the molecular mechanism underlying rice-regulating ETV traits are unclear. In this study, the candidate genes in regulating ETV traits have been sought by quantitative trait locus (QTL) mapping and bulk-segregation analysis by resequencing method (BSA-seq) conjoint analysis using rice backcross inbred line (BIL) populations, which were cultivated as late-season rice of double-cropping rice systems. By QTL mapping, seven QTLs were detected on chromosomes 1, 3, 4, and 9, with the logarithm of the odds (LOD) values ranging from 3.52 to 7.57 and explained 3.23% to 12.98% of the observed phenotypic variance. By BSA-seq analysis, seven QTLs on chromosomes 1, 2, 4, 5, 7, and 9 were identified using single-nucleotide polymorphism (SNP) and insertions/deletions (InDel) index algorithm and Euclidean distance (ED) algorithm. The overlapping QTL resulting from QTL mapping and BSA-seq analysis was shown in a 1.39 Mb interval on chromosome 4. In the overlap interval, six genes, including the functional unknown genes Os04g0455650, Os04g0470901, Os04g0500600, and ethylene-insensitive 3 (Os04g0456900), sialyltransferase family domain containing protein (Os04g0506800), and ATOZI1 (Os04g0497300), showed the differential expression between ETV rice lines and late tillering vigor (LTV) rice lines and have a missense base mutation in the genomic DNA sequences of the parents. We speculate that the six genes are the candidate genes regulating the ETV trait in rice, which provides a research basis for revealing the molecular mechanism behind the ETV traits in rice.

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