Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.ejsobi.2008.05.003 |
Vertical distribution of microbial communities under the canopy of two legume bushes in the Tehuacan Desert, Mexico | |
Rodriguez-Zaraqoza, Saluador2; Gonzalez-Ruiz, Teresa2; Gonzalez-Lozano, Ernestina2; Lozada-Rojas, Abraham2; Mayzlish-Gati, Einav1; Steinberger, Yosef1![]() | |
通讯作者 | Steinberger, Yosef |
来源期刊 | EUROPEAN JOURNAL OF SOIL BIOLOGY
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ISSN | 1164-5563 |
EISSN | 1778-3615 |
出版年 | 2008 |
卷号 | 44期号:4页码:373-380 |
英文摘要 | Prosopis laevigata and Parkinsonia praecox are the most abundant perennial shrubs in the Tehuacan Desert, forming ’islands of fertility’ that dominate the alluvial terraces. Both species exhibit very similar phenology, with the timing of litter foliage being the only difference between them. P. praecox litter occurs shortly after the rains, while P. laevigata maintains its leaves until the next wet season. As degradable organic matter (OM) is one of the leading factors determining soil biota composition and activity, because of the OM provided by littering, we expected that the vertical distribution of the microbial community in the vicinity of the root zone of P. praecox would be higher in comparison to P. laevigata. One soil sampling was performed; during the rainy season in August, soil samples were collected from a 0-50-cm depth at 10-cm intervals, in the vicinity of the root canopy of four individual plants of each species and the interspaces between them. Soil moisture, organic matter, and counts of bacteria and fungi under shrubs were found to decrease from the upper to deeper layers. Respiratory activity was higher in the deeper layers (p < 0.01) in all three sampling sites. Total bacterial, fungal, and heterotrophic diazotrophs were found to be significantly (p < 0.001) more numerous under shrubs than in the interspace soil. No nitrogen-fixing bacteria were isolated from interplant soils in comparison to the soil samples collected beneath the shrubs. Heterotrophic diazotrophs significantly (p < 0.01) reduced more acetylene under P. praecox (29.0 nmol/g soil) than under P. laevigata (20.1 nmol/g soil). Although the microbial numbers were unaffected by differences in plant phenology, greater nitrogenase activity under P. praecox may influence nitrogen distribution in this and environment. Due to the fact that only one sampling was undertaken, this study elucidates the differences in the microbial community between the two shrubs, but the dynamics in the above community could not be shown. (C) 2008 Elsevier Masson SAS. All rights reserved. |
英文关键词 | heterotrophic diazotrophs fertility islands Prosopis laevigata Parkinsonia praecox desert soil system soil microbial communities |
类型 | Article |
语种 | 英语 |
国家 | Israel ; Mexico |
收录类别 | SCI-E |
WOS记录号 | WOS:000259374000003 |
WOS关键词 | NEGEV DESERT ; PHENOLOGICAL PATTERNS ; FUNCTIONAL DIVERSITY ; NEMATODE COMMUNITIES ; ZYGOPHYLLUM-DUMOSUM ; SPATIAL VARIATION ; SOIL ; ECOSYSTEM ; NITROGEN ; POPULATION |
WOS类目 | Ecology ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
来源机构 | Universidad Nacional Autónoma de México |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/157277 |
作者单位 | 1.Bar Ilan Univ, Mina & Everard Goodman Fac Life Sci, IL-52900 Ramat Gan, Israel; 2.Univ Nacl Autonoma Mexico, Fac Estudios Super Iztacala, Unidad Biol Tecnol & Prototipos, Microbiol Lab, Tlalnepantla 54090, Estado Mexico, Mexico |
推荐引用方式 GB/T 7714 | Rodriguez-Zaraqoza, Saluador,Gonzalez-Ruiz, Teresa,Gonzalez-Lozano, Ernestina,et al. Vertical distribution of microbial communities under the canopy of two legume bushes in the Tehuacan Desert, Mexico[J]. Universidad Nacional Autónoma de México,2008,44(4):373-380. |
APA | Rodriguez-Zaraqoza, Saluador,Gonzalez-Ruiz, Teresa,Gonzalez-Lozano, Ernestina,Lozada-Rojas, Abraham,Mayzlish-Gati, Einav,&Steinberger, Yosef.(2008).Vertical distribution of microbial communities under the canopy of two legume bushes in the Tehuacan Desert, Mexico.EUROPEAN JOURNAL OF SOIL BIOLOGY,44(4),373-380. |
MLA | Rodriguez-Zaraqoza, Saluador,et al."Vertical distribution of microbial communities under the canopy of two legume bushes in the Tehuacan Desert, Mexico".EUROPEAN JOURNAL OF SOIL BIOLOGY 44.4(2008):373-380. |
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