Zhang B, Zhang P, Chen X
Zhejiang University, Hangzhou 30029.
Ying Yong Sheng Tai Xue Bao. 2000 Dec;11(6):951-3.
Microorganisms such as biological control agents (BCA), plant growth-promoting rhizobacteria (PGPR) and yield increasing bacteria (YIB) were introduced along growing roots. The colonization process of introduced bacteria was proved that they attached root tipfirst, then distributed along roots, multiplicated there, and survived as certain population size. The colonization location was closely related with root exudates, which was usually at the junction between cortex cells or at the base of lateral roots or root hairs. The variation of colonization by introduced microorganisms in the rhizosphere was caused by biotic and abiotic factors. Biotic factors included the physiological characters of introduced microorganisms and interactions between introduced microorganisms and native microbes. The more important factors were plant genotypes which associated with introduced beneficial microbes and regulated the population and community of those microbes affecting the colonization of introduced microorganisms. Abiotic factors here referred to soil environmental conditions, e.g., soil texture, water content, soil temperature and pH value.
诸如生物防治剂（BCA）、促植物生长根际细菌（PGPR）和增产细菌（YIB）等微生物是沿着生长的根系引入的。已证实引入细菌的定殖过程是它们首先附着在根尖，然后沿着根系分布，在那里繁殖，并以一定的种群规模存活。定殖位置与根系分泌物密切相关，通常位于皮层细胞之间的交界处或侧根或根毛的基部。根际中引入微生物定殖的变化是由生物和非生物因素引起的。生物因素包括引入微生物的生理特性以及引入微生物与本地微生物之间的相互作用。更重要的因素是与引入的有益微生物相关并调节那些影响引入微生物定殖的微生物的种群和群落的植物基因型。这里的非生物因素是指土壤环境条件，例如土壤质地、含水量、土壤温度和pH值。
