Lindoo S J, Noodén L D
Department of Botany, University of Michigan, Ann Arbor, Michigan 48109.
Plant Physiol. 1977 Jun;59(6):1136-40. doi: 10.1104/pp.59.6.1136.
Soybean, a monocarpic plant, has been found to undergo rapid senescence as its fruits mature. In soybeans (Glycine max[L.] Merrill) cv. Anoka, foliar senescence begins during the period of most rapid pod-fill (seed growth), and it can be eliminated by surgical removal of the seeds at an early stage of their growth. Experiments in which fruits are removed from some regions of the plant but allowed to remain on other regions have established that the transmission of the senescence signal is limited; it affects mainly those leaves nearest to the nodes bearing the fruits. The implications of this localized signal movement are discussed.
大豆是一种单次结果植物,已发现其果实成熟时会迅速衰老。在大豆(Glycine max[L.] Merrill)品种Anoka中,叶片衰老在豆荚充实最快(种子生长)的时期开始,并且在种子生长早期通过手术去除种子可以消除衰老。从植株的某些区域去除果实但让其留在其他区域的实验表明,衰老信号的传递是有限的;它主要影响最靠近结果节的那些叶片。本文讨论了这种局部信号移动的影响。