Auxin and ABA act as central regulators of developmental networks associated with paradormancy in Canada thistle (Cirsium arvense).

Functional & Integrative Genomics
James V AndersonMark A Mikel

Abstract

Dormancy in underground vegetative buds of Canada thistle, an herbaceous perennial weed, allows escape from current control methods and contributes to its invasive nature. In this study, ~65 % of root sections obtained from greenhouse propagated Canada thistle produced new vegetative shoots by 14 days post-sectioning. RNA samples obtained from sectioned roots incubated 0, 24, 48, and 72 h at 25°C under 16:8 h light-dark conditions were used to construct four MID-tagged cDNA libraries. Analysis of in silico data obtained using Roche 454 GS-FLX pyrosequencing technologies identified molecular networks associated with paradormancy release in underground vegetative buds of Canada thistle. Sequencing of two replicate plates produced ~2.5 million ESTs with an average read length of 362 bases. These ESTs assembled into 67358 unique sequences (21777 contigs and 45581 singlets) and annotation against the Arabidopsis database identified 15232 unigenes. Among the 15232 unigenes, we identified processes enriched with transcripts involved in plant hormone signaling networks. To follow-up on these results, we examined hormone profiles in roots, which identified changes in abscisic acid (ABA) and ABA metabolites, auxins, and cytokinins post-s...Continue Reading

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Citations

Dec 25, 2015·Molecular Genetics and Genomics : MGG·Takashi HikageKen-Ichi Tsutsumi
Mar 26, 2016·Frontiers in Plant Science·Chenglin ChaiHenry T Nguyen
Apr 17, 2013·The New Phytologist·Alessia GuggisbergLoren H Rieseberg
May 18, 2016·Plant Science : an International Journal of Experimental Plant Biology·Noriko YamagishiKen-Ichi Tsutsumi
Feb 23, 2017·Functional & Integrative Genomics·Haifeng JiaJinggui Fang

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