Arid
DOI10.1046/j.1439-037X.2003.00051.x
Effects of a nitrogen-fixing indigenous bacterium (Klebsiella pneumoniae) on the growth and development of the halophyte Salicornia bigelovii as a new crop for saline environments
Rueda-Puente, E; Castellanos, T; Troyo-Dieguez, E; de Leon-Alvarez, JLD; Murillo-Amador, B
通讯作者Castellanos, T
来源期刊JOURNAL OF AGRONOMY AND CROP SCIENCE
ISSN0931-2250
出版年2003
卷号189期号:5页码:323-332
英文摘要

Salicornia bigelovii is a novel crop for salty soils, which can contribute to arid-zone management where irrigation with salty water, including sea water, is now a necessity. Nitrogen fixation by bacteria associated with the roots of S. bigelovii and similar halophytes is an important source of available nitrogen in salt marsh ecosystems. However, the diversity of the rhizosphere of Salicornia is unknown. Five areas around the Bay of La Paz in Baja California Sur, Mexico were sampled to detect nitrogen-fixing bacteria associated with this halophyte; from these, 18 colonies were isolated. Only one showed high acetylene reduction activity. This bacterium was identified as Klebsiella pneumoniae. The effects of K. pneumoniae were evaluated at the germination and early seedling growth stages of two genotypes of S. bigelovii (’wild genotype’ and cultivar SOS-10), as an alternative crop for semiarid and saline environments. This bacterium, in conjunction with Azospirillum halopraeferens, was tested for growth-promoting ability when inoculated on S. bigelovii genotypes under various saline concentration conditions. During germination and early seedling growth, K. pneumoniae showed high specificity for the wild S. bigelovii genotype, while A. halopraeferens was more specific for the improved S. bigelovii genotype SOS-10. This is the first report of K. pneumoniae as a nitrogen-fixing bacterium associated with the oilseed S. bigelovii, a novel halophyte crop. A reliable biological method, based on beneficial bacteria, is suggested to help maintain or improve the fertility of soils sustaining Salicornia fields.


英文关键词Azospirillum halopraeferens halophyte Klebsiella pneumoniae nitrogen fixation Salicornia bigelovii
类型Article
语种英语
国家Mexico
收录类别SCI-E
WOS记录号WOS:000185195600008
WOS关键词ZEA-MAYS L ; AZOSPIRILLUM-BRASILENSE ; MANGROVE RHIZOSPHERE ; OILSEED HALOPHYTE ; STAPHYLOCOCCUS SP ; SALT-MARSH ; INOCULATION ; GERMINATION ; SEAWATER ; FIXATION
WOS类目Agronomy
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/144921
作者单位(1)CIBNOR, Dept Environm Microbiol, La Paz, BCS, Mexico
推荐引用方式
GB/T 7714
Rueda-Puente, E,Castellanos, T,Troyo-Dieguez, E,et al. Effects of a nitrogen-fixing indigenous bacterium (Klebsiella pneumoniae) on the growth and development of the halophyte Salicornia bigelovii as a new crop for saline environments[J],2003,189(5):323-332.
APA Rueda-Puente, E,Castellanos, T,Troyo-Dieguez, E,de Leon-Alvarez, JLD,&Murillo-Amador, B.(2003).Effects of a nitrogen-fixing indigenous bacterium (Klebsiella pneumoniae) on the growth and development of the halophyte Salicornia bigelovii as a new crop for saline environments.JOURNAL OF AGRONOMY AND CROP SCIENCE,189(5),323-332.
MLA Rueda-Puente, E,et al."Effects of a nitrogen-fixing indigenous bacterium (Klebsiella pneumoniae) on the growth and development of the halophyte Salicornia bigelovii as a new crop for saline environments".JOURNAL OF AGRONOMY AND CROP SCIENCE 189.5(2003):323-332.
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