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Cytokinin Oxidase Regulates Rice Grain Production
TLDR
It is shown that a QTL that increases grain productivity in rice, Gn1a, is a gene for cytokinin oxidase/dehydrogenase (OsCKX2), an enzyme that degrades the phytohormone cytokinIn.
GIBBERELLIN INSENSITIVE DWARF1 encodes a soluble receptor for gibberellin
TLDR
The results indicate that GID1 is a soluble receptor mediating GA signalling in rice, a new GA-insensitive dwarf mutant of rice, that encodes an unknown protein with similarity to the hormone-sensitive lipases.
Loss of Function of a Rice brassinosteroid insensitive1 Homolog Prevents Internode Elongation and Bending of the Lamina Joint
TLDR
The phenotypical and molecular characterization of a rice dwarf mutant, d61, that is less sensitive to BR compared to the wild type is reported, and introduction of the entire OsBRI1 coding region into d61 plants complemented the mutation to display the wild-type phenotype.
An Overview of Gibberellin Metabolism Enzyme Genes and Their Related Mutants in Rice1[w]
TLDR
Based on the mutant and expression analyses, it is demonstrated that the enzymes catalyzing the early steps in the GA biosynthetic pathway are mainly encoded by single genes, while those for later steps are encoded by gene families.
Green revolution: A mutant gibberellin-synthesis gene in rice
TLDR
The chronic food shortage that was feared after the rapid expansion of the world population in the 1960s was averted largely by the development of a high-yielding semi-dwarf variety of rice known as IR8, the so-called rice 'green revolution'; this gene is identified as encoding an oxidase enzyme involved in the biosynthesis of gibberellin, a plant growth hormone.
The ethylene response factors SNORKEL1 and SNORKEL2 allow rice to adapt to deep water
TLDR
It is demonstrated that the introduction of three quantitative trait loci from deepwater rice into non-deepwater rice enabled the latter to become deepwater Rice, and will contribute to rice breeding in lowland areas that are frequently flooded during the rainy season.
slender Rice, a Constitutive Gibberellin Response Mutant, Is Caused by a Null Mutation of the SLR1 Gene, an Ortholog of the Height-Regulating Gene GAI/RGA/RHT/D8
TLDR
The rice slender mutant (slr1-1) is caused by a loss-of-function mutation of the SLR1 gene, which is an ortholog of GAI, RGA, RHT, and D8, and succeeded in producing GA-insensitive dwarf rice by transforming wild-type rice with a modified SLR 1 gene construct that has a 17–amino acid deletion affecting the DELLA region.
Accumulation of Phosphorylated Repressor for Gibberellin Signaling in an F-box Mutant
TLDR
It is concluded that GID2 is a positive regulator of GA signaling and that regulated degradation of SLR1 is initiated through GA-dependent phosphorylation and finalized by an SCFGID2-proteasome pathway.
Crown rootless1, Which Is Essential for Crown Root Formation in Rice, Is a Target of an AUXIN RESPONSE FACTOR in Auxin Signalingw⃞
TLDR
It is concluded that Crl1 encodes a positive regulator for crown and lateral root formation and that its expression is directly regulated by an ARF in the auxin signaling pathway.
Rice plant development: from zygote to spikelet.
TLDR
The phasic development of the rice plant is described, and the developmental courses of major organs, leaf, root and spikelet, and specific organs/tissues are described to propose a staging system for each organ.
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