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The actin cytoskeleton is an important regulator of cell expansion and morphogenesis in plants. However, the molecular mechanisms linking the actin cytoskeleton to these processes remain largely unknown. Here, we report the functional analysis of rice (Oryza sativa) FH5/BENT UPPERMOST INTERNODE1 (BUI1), which encodes a formin-type actin nucleation factor(More)
The rice gene ELONGATED UPPERMOST INTERNODE1 (EUI1) encodes a P450 monooxygenase that epoxidizes gibberellins (GAs) in a deactivation reaction. The Arabidopsis genome contains a tandemly duplicated gene pair ELA1 (CYP714A1) and ELA2 (CYP714A2) that encode EUI homologs. In this work, we dissected the functions of the two proteins. ELA1 and ELA2 exhibited(More)
Angiosperm seeds usually consist of two major parts: the embryo and the endosperm. However, the molecular mechanism(s) underlying embryo and endosperm development remains largely unknown, particularly in rice, the model cereal. Here, we report the identification and functional characterization of the rice GIANT EMBRYO (GE) gene. Mutation of GE resulted in a(More)
Plant senescence plays diverse important roles in development and environmental responses. However, the molecular basis of plant senescence is remained largely unknown. A rice spontaneous mutant with the character of early senescence and male sterility (sms) was found in the breeding line NT10-748. In order to identify the gene SMS1 and the underlying(More)
A newly isolated mutant of the symbiotic bacterium Rhizobium leguminosarum bv. trifolii, Rt79, is deficient in exopolysaccharide synthesis. It induced nodules defective in nitrogen fixation on clover (Trifolium pratense L.). The expression of plant (ENOD2, leghemoglobin) and bacterial (ropA, nifH) genes was studied by in-situ hybridization. The absence of(More)
Programmed cell death (PCD) and immunity in plants are tightly controlled to promote antimicrobial defense while preventing autoimmunity. However, the mechanisms contributing to this immune homeostasis are poorly understood. Here, we isolated a rice mutant ebr1 (enhanced blight and blast resistance 1) that shows enhanced broad-spectrum bacterial and fungal(More)
The map-based cloning and application of a flower organ number gene twin - grain1 provide great potential for improving seed production in hybrid rice. A new germplasm for high-yield rice breeding, the twin-grain1 (tg1) mutant with more than one grain in a glume, was obtained from the Zhejing 22 rice variety via physical mutagenesis. The mapping results(More)
Weibing Yang,a,1 Sulin Ren,b,1 Xiaoming Zhang,c,1 Mingjun Gao,a Shenghai Ye,c Yongbin Qi,c Yiyan Zheng,b Juan Wang,b Longjun Zeng,a Qun Li,a Shanjin Huang,b,2 and Zuhua Hea,2,3 a National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China b Key Laboratory of(More)
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