title: [Endogenous hormone contents and their habitat differentia of Reaumuria trigyna and R. soongorica in different salt habitats].
abstract: By means of Enzyme Linked Immunosorbent Assay (ELISA), this paper analyzed the contents of endogenous hormones ABA, IAA, ZR, and GA3 in Reaumuria trigyna and its related congener R. soongorica from four different salt habitats. In the identical habitats, the contents of growth-promoting hormones IAA, ZR, and GA3 in R. trigyna were lower than those in R. soongorica, while the content of growth-suppressing hormone ABA was in contrary, which could be one of the main reasons that R. trigyna had a weaker ecological adaptability than R. soongorica. The (IAA+ZR+GA3) /ABA in wild R. trigyna varied with habitats, being saline soil > non-salinized soil > heavy solonchack, which was consistent with the density and coverage of R. trigyna population being the largest on saline soil and followed by on non-salinized soil and heavy solonchack, and suggested that R. trigyna having lived in saline habitat for a long time developed a corresponding inherent adaptation mechanism, and that the integrative regulation of endogenous hormones under salt stress played a key role for the growth and development of R. trigyna.
authors: College of Life Science, Inner Mongolia University, Hohhot 010021, China. shisongli122@126.com
authors: Song-Li
authors: SL
authors: Shi
authors: Ying-Chun
authors: YC
authors: Wang
authors: Jian-Hua
authors: JH
authors: Zhou
authors: Hong-Bing
authors: HB
authors: Zhou