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Genome-wide association mapping unravels the genetic control of seed germination and vigor in Brassica napus.


ABSTRACT: Rapid and uniform seed germination is a crucial prerequisite for crop establishment and high yield levels in crop production. A disclosure of genetic factors contributing to adequate seed vigor would help to further increase yield potential and stability. Here we carried out a genome-wide association study in order to define genomic regions influencing seed germination and early seedling growth in oilseed rape (Brassica napus L.). A population of 248 genetically diverse winter-type B. napus accessions was genotyped with the Brassica 60k SNP Illumina genotyping array. Automated high-throughput in vitro phenotyping provided extensive data for multiple traits related to germination and early vigor, such as germination speed, absolute germination rate and radicle elongation. The data obtained indicate that seed germination and radicle growth are strongly environmentally dependent, but could nevertheless be substantially improved by genomic-based breeding. Conditions during seed production and storage were shown to have a profound effect on seed vigor, and a variable manifestation of seed dormancy appears to contribute to differences in germination performance in B. napus. Several promising positional and functional candidate genes could be identified within the genomic regions associated with germination speed, absolute germination rate, radicle growth and thousand seed weight. These include B. napus orthologs of the Arabidopsis thaliana genes SNOWY COTYLEDON 1 (SCO1), ARABIDOPSIS TWO-COMPONENT RESPONSE REGULATOR (ARR4), and ARGINYL-t-RNA PROTEIN TRANSFERASE 1 (ATE1), which have been shown previously to play a role in seed germination and seedling growth in A. thaliana.

SUBMITTER: Hatzig SV 

PROVIDER: S-EPMC4391041 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Publications

Impact of Donor Source on Allogeneic Hematopoietic Stem Cell Transplantation for Mature T Cell and Natural Killer Cell Neoplasms in the Kyoto Stem Cell Transplantation Group.

Watanabe Mizuki M   Kanda Junya J   Arai Yasuyuki Y   Hishizawa Masakatsu M   Nishikori Momoko M   Ishikawa Takayuki T   Imada Kazunori K   Ueda Yasunori Y   Akasaka Takashi T   Yonezawa Akihito A   Nohgawa Masaharu M   Kitano Toshiyuki T   Itoh Mitsuru M   Takeoka Tomoharu T   Moriguchi Toshinori T   Yago Kazuhiro K   Arima Nobuyoshi N   Anzai Naoyuki N   Watanabe Mitsumasa M   Kondo Tadakazu T   Takaori-Kondo Akifumi A  

Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation 20200730 12


Although allogeneic hematopoietic stem cell transplantation (allo-HSCT) is the key strategy to cure patients with mature T and natural killer (NK) cell lymphomas/leukemia, especially those with relapsed/refractory diseases, there is no consensus strategy for donor selection. We retrospectively analyzed the outcomes of allo-HSCT in 111 patients in 15 Japanese institutions as a multi-institutional joint research project. Thirty-nine patients received bone marrow or peripheral blood stem cell trans  ...[more]

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