title: [Effect of drought stress on growth and physiological-biochemical characteristics of Stellaria dichotoma].
abstract: A pot experiment was conducted to study effect of drought stress on leaf physiological characteristics and growth of one year old Stellaria dichotoma seedlings. The result showed that plant height and shoot dry weight significantly decreased with decrease in soil water content; however, root length and root dry weight increased at light drought stress and decreased at severe drought stress. The result also showed that with the decrease of soil water content, proline content in S. dichotoma leaves decreased then increase, while solube protein content decreased. Activities of SOD and POD in S. dichotoma leaves significantly decreased as soil water content decreased, while activity of CAT significantly decreased at severe drought stress. Membrane permeability in S. dichotoma leaves increased, while MDA content decreased then increased as soil water decreased. These results suggest that S. dichotoma had osmotic stress resistance ability and reactive oxygen scavenging capacity at light drought stress, which caused S. dichotoma growth was no inhibited at a certain extent drought stress.
authors.forename: Duo-Yong
authors.initials: DY
authors.lastname: Lang
authors.forename: Jia-Jia
authors.initials: JJ
authors.lastname: Cui
authors.forename: Zhou
authors.initials: Z
authors.lastname: Da
authors.forename: Yue-Tong
authors.initials: YT
authors.lastname: Li
authors.forename: Li
authors.initials: L
authors.lastname: Zhou
authors.forename: Xin-Hui
authors.initials: XH
authors.lastname: Zhang
mesh_terms: D055864:Droughts; D018515:Plant Leaves / Q000201:enzymology / Q000254:growth & development / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism; D018517:Plant Roots / Q000201:enzymology / Q000254:growth & development / Q000378:metabolism; D011392:Proline / Q000378:metabolism; D036226:Seedlings / Q000201:enzymology / Q000254:growth & development / Q000378:metabolism; D029752:Stellaria / Q000201:enzymology / Q000254:growth & development* / Q000378:metabolism; D014867:Water / Q000378:metabolism*
chemical_list: D010940:Plant Proteins; D014867:Water; D011392:Proline