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Grain-filling, an important trait that contributes greatly to grain weight, is regulated by quantitative trait loci and is associated with crop domestication syndrome. However, the genes and underlying molecular mechanisms controlling crop grain-filling remain elusive. Here we report the isolation and functional analysis of the rice GIF1 (GRAIN INCOMPLETE(More)
The transition from dormancy to germination in seeds is a key physiological process during the lifecycle of plants. Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy; it acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3). However, whether other phytohormone pathways(More)
Plants must effectively defend against biotic and abiotic stresses to survive in nature. However, this defense is costly and is often accompanied by significant growth inhibition. How plants coordinate the fluctuating growth-defense dynamics is not well understood and remains a fundamental question. Jasmonate (JA) and gibberellic acid (GA) are important(More)
The key regulator of salicylic acid (SA)-mediated resistance, NPR1, is functionally conserved in diverse plant species, including rice (Oryza sativa L.). Investigation in depth is needed to provide an understanding of NPR1-mediated resistance and a practical strategy for the improvement of disease resistance in the model crop rice. The rice genome contains(More)
14-3-3 proteins function as major regulators of primary metabolism and cellular signal transduction in plants. However, their involvement in plant defense and stress responses is largely unknown. In order to better address functions of the rice 14-3-3/GF14 proteins in defense and abiotic stress responses, we examined the rice GF14 family that comprises(More)
The recessive tall rice (Oryza sativa) mutant elongated uppermost internode (eui) is morphologically normal until its final internode elongates drastically at the heading stage. The stage-specific developmental effect of the eui mutation has been used in the breeding of hybrid rice to improve the performance of heading in male sterile cultivars. We found(More)
Salicylic acid (SA) plays a central role in plant disease resistance, and emerging evidence indicates that auxin, an essential plant hormone in regulating plant growth and development, is involved in plant disease susceptibility. GH3.5, a member of the GH3 family of early auxin-responsive genes in Arabidopsis (Arabidopsis thaliana), encodes a protein(More)
As important signal molecules, jasmonates (JAs) and green leaf volatiles (GLVs) play diverse roles in plant defense responses against insect pests and pathogens. However, how plants employ their specific defense responses by modulating the levels of JA and GLVs remains unclear. Here, we describe identification of a role for the rice HPL3 gene, which encodes(More)
The RAR1 and SGT1 proteins function synergistically or antagonistically in plant innate immune responses. Here, we show that the rice orthologs OsRAR1 and OsSGT1 physically interact in vivo and in yeast. They displayed conserved roles in Arabidopsis disease resistance through ectopic expression in the Arabidopsis rar1 and sgt1 mutants. Overexpression of(More)
The identification and utilization of broad-spectrum resistance genes have been proven the most effective and economical approach to control rice blast disease. To understand the molecular mechanism of broad-spectrum resistance to rice blast, we conducted genetic and fine mapping analysis of the blast resistance gene in a Chinese rice variety: Gumei 4 (GM4)(More)