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Author Takai T., Adachi S., Taguchi-Shiobara F., Sanoh-Arai Y., Iwasawa N., Yoshinaga S., Hirose S., Taniguchi Y., Yamanouchi U., Wu J., Matsumoto T., Sugimoto K., Kondo K., Ikka T., Ando T., Kono I., Ito S., Shomura A., Ookawa T., Hirasawa T., Yano M., Kondo M., Yamamoto T.
Title A natural variant of nal1, selected in high-yield rice breeding programs, pleiotropically increases photosynthesis rate.
Abstract:
Improvement of leaf photosynthesis is an important strategy for greater crop productivity. Here we show that the quantitative trait locus GPS (GREEN FOR PHOTOSYNTHESIS) in rice (Oryza sativa L.) controls photosynthesis rate by regulating carboxylation efficiency. Map-based cloning revealed that GPS is identical to nal1 (NARROW LEAF1), a gene previously reported to control lateral leaf growth. The high-photosynthesis allele of GPS was found to be a partial loss-of-function allele of nal1. This allele increased mesophyll cell number between vascular bundles, which led to thickened leaves, and it pleiotropically enhanced photosynthesis rate without the detrimental side effects observed in previously identified nal1 mutants, such as dwarf plant stature. Furthermore, pedigree analysis suggested that rice breeders have repeatedly selected the high-photosynthesis allele in high-yield breeding programs. The identification and utilization of nal1 (GPS) can enhance future high-yield breeding and provides a new strategy for increasing rice productivity.
Journal Sci Rep
Country unknown
Volume 3
Pages 2149
Year 2013
PubMed ID 23985993
PubMed Central ID -
DOI 10.1038/srep02149
URL -
Relation
Gene NAL1
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain 		-
Stages in Each Organ
- Muant Lines (Gene) 		-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
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