Stress Increases Ecological Risk of Glufosinate-Resistant Transgene Located on Alien Chromosomes in Hybrids Between Transgenic Brassica napus and Wild Brassica juncea.

ABSTRACT: When glufosinate-resistant transgenic Brassica napus (transgene PAT located on C chromosome) were backcrossed with wild Brassica juncea, 50% of the progeny expressed PAT under favourable conditions. However, exposure to stress (drought, salt, flooding, and intraspecific competition) increased the proportion of plants expressing the PAT gene (r-e plants) by approximately 20% compared to those under unstressed conditions. In the self-pollinated progeny of the stressed plants, the proportion of r-e plants increased by a nearly 30% compared to that of the unstressed plants. Composite fitness was comparable between plants developed under drought stress at the seedling stage and those grown under favourable conditions. Abscisic acid (ABA) content and expression

SUBMITTER: Shao Z 

PROVIDER: S-EPMC11859238 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature