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High-throughput discovery of plastid genes causing albino phenotypes in ornamental chimeric plants
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作者 Hyun-Seung Park Jae-Hyeon Jeon +15 位作者 Woohyeon Cho Yeonjeong Lee Jee Young Park Jiseok kim Young Sang Park Hyun Jo Koo Jung Hwa Kang Taek Joo Lee Sang Hoon kim jin-baek kim Hae-Yun Kwon Suk-Hwan kim Nam-Chon Paek Geupil Jang Jeong-Yong Suh Tae-Jin Yang 《Horticulture Research》 SCIE CSCD 2023年第1期249-259,共11页
Chimeric plants composed of green and albino tissues have great ornamental value.To unveil the functional genes responsible for albino phenotypes in chimeric plants,we inspected the complete plastid genomes(plastomes)... Chimeric plants composed of green and albino tissues have great ornamental value.To unveil the functional genes responsible for albino phenotypes in chimeric plants,we inspected the complete plastid genomes(plastomes)in green and albino leaf tissues from 23 ornamental chimeric plants belonging to 20 species,including monocots,dicots,and gymnosperms.In nine chimeric plants,plastomes were identical between green and albino tissues.Meanwhile,another 14 chimeric plants were heteroplasmic,showing a mutation between green and albino tissues.We identified 14 different point mutations in eight functional plastid genes related to plastid-encoded RNA polymerase(rpo)or photosystems which caused albinism in the chimeric plants.Among them,12 were deleterious mutations in the target genes,in which early termination appeared due to small deletion-mediated frameshift or single nucleotide substitution.Another was single nucleotide substitution in an intron of the ycf3 and the other was a missense mutation in coding region of the rpoC2 gene.We inspected chlorophyll structure,protein functional model of the rpoC2,and expression levels of the related genes in green and albino tissues of Reynoutria japonica.A single amino acid change,histidine-to-proline substitution,in the rpoC2 protein may destabilize the peripheral helix of plastid-encoded RNA polymerase,impairing the biosynthesis of the photosynthesis system in the albino tissue of R.japonica chimera plant. 展开更多
关键词 plast substitution ORNAMENTAL
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Analytical Study on Piezoelectric Effects on Exciton Dissociation
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作者 SeongMin kim Jaewook Ha +1 位作者 Hyeok kim jin-baek kim 《Communications in Computational Physics》 SCIE 2016年第6期179-187,共9页
We analytically and numerically compute the Onsager dissociation rate(exciton dissociation)on an interface induced by a piezoelectric potential in an inorganicorganic hybrid p-n junction system(ZnO+(poly(p-phenylene v... We analytically and numerically compute the Onsager dissociation rate(exciton dissociation)on an interface induced by a piezoelectric potential in an inorganicorganic hybrid p-n junction system(ZnO+(poly(p-phenylene vinylene));PPV).When a positive piezoelectric potential is created at the interface region owing to the deformation of the system,free electrons accumulate at the interface.Hence,screening effects are observed.It is assumed that the electron layer formed at the interface then attracts free holes from the p-type PPV region,which leads to exciton formation,possibly via the Langevin recombination process.The increased exciton density can then contribute to the Onsager dissociation rate,which is maximum around the interface.This paper focuses on the role of piezoelectric effects in promoting exciton formation at the interface and its relation with the exciton dissociation rate. 展开更多
关键词 Exciton dissociation Onsager rate PIEZOELECTRIC p-n junction recombination
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