Journal
GENES & GENETIC SYSTEMS
Volume 93, Issue 5, Pages 209-220Publisher
GENETICS SOC JAPAN
DOI: 10.1266/ggs.18-00025
Keywords
abscisic acid; Arabidopsis thaliana; humidity; stigmatic papillae
Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan [16H06470, 16H06464, 16K21727, 17H00821, 18KT0048]
- Japan Society for the Promotion of Science [16H04854, 16K15085, 16H05066, 25450515]
- Grants-in-Aid for Scientific Research [16H04854, 25450515, 16H05066, 16H06470, 16K15085, 18KT0048, 17H00821, 16K21727, 16H06464] Funding Source: KAKEN
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Stigmatic papillae develop at the apex of the gynoecium and play an important role as a site of pollination. The papillae in Brassicaceae are of the dry and unicellular type, and more than 15,000 genes are expressed in the papillae; however, the molecular and physiological mechanisms of their development remain unknown. We found that the papillae in Arabidopsis thaliana change their length in response to altered ambient humidity: papillae of flowers incubated under high humidity elongated more than those under normal humidity conditions. Genetic analysis and transcriptome data suggest that an abscisic acid-mediated abiotic stress response mechanism regulates papilla length. Our data suggest a flexible regulation of papilla elongation at the post-anthesis stage, in response to abiotic stress, as an adaptation to environmental conditions.
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