Bashan Yoav, Holguin Gina, de-Bashan Luz E
Environmental Microbiology Group, Center for Biological Research of the Northwest (CIB), P.O. Box 128, La Paz, B.C.S 23000, Mexico.
Can J Microbiol. 2004 Aug;50(8):521-77. doi: 10.1139/w04-035.
This review presents a critical and comprehensive documentation and analysis of the developments in agricultural, environmental, molecular, and physiological studies related to Azospirillum cells, and to Azospirillum interactions with plants, based solely on information published between 1997 and 2003. It was designed as an update of previous reviews (Bashan and Levanony 1990; Bashan and Holguin 1997a), with a similar scope of interest. Apart from an update and critical analysis of the current knowledge, this review focuses on the central issues of Azospirillum research today, such as, (i) physiological and molecular studies as a general model for rhizosphere bacteria; (ii) co-inoculation with other microorganisms; (iii) hormonal studies and re-consideration of the nitrogen contribution by the bacteria under specific environmental conditions; (iv) proposed Azospirillum as a non-specific plant-growth-promoting bacterium; (v) re-introduction of the "Additive Hypothesis," which suggests involvement of multiple mechanisms employed by the bacteria to affect plant growth; (vi) comment on the less researched areas, such as inoculant and pesticide research; and (vii) proposes possible avenues for the exploitation of this bacterium in environmental areas other than agriculture.
本综述仅基于1997年至2003年间发表的信息，对与固氮螺菌细胞以及固氮螺菌与植物相互作用相关的农业、环境、分子和生理学研究进展进行了批判性和全面的记录与分析。它旨在作为先前综述（Bashan和Levanony，1990年；Bashan和Holguin，1997a）的更新，具有相似的关注范围。除了对当前知识进行更新和批判性分析外，本综述还聚焦于当今固氮螺菌研究的核心问题，例如：（i）作为根际细菌通用模型的生理学和分子研究；（ii）与其他微生物共同接种；（iii）激素研究以及在特定环境条件下对细菌氮贡献的重新考量；（iv）将固氮螺菌提议为一种非特异性植物生长促进细菌；（v）重新引入“累加假说”，该假说认为细菌采用多种机制影响植物生长；（vi）对研究较少的领域进行评论，如接种剂和农药研究；以及（vii）提出在农业以外的环境领域利用这种细菌的可能途径。
