Responses of native legume desert trees used for reforestation in the Sonoran Desert to plant growth-promoting microorganisms in screen house |
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| Authors: | Yoav Bashan Bernardo Salazar Ma Esther Puente |
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| Institution: | (1) Environmental Microbiology Group, Northwestern Center for Biological Research (CIBNOR), Mar Bermejo 195, Colonia Playa Palo de Santa Rita, La Paz, B.C.S., 23090, Mexico;(2) Department of Soil, Water and Environmental Science, The University of Arizona, Tucson, AZ, USA |
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| Abstract: | Three slow-growing legume trees used for desert reforestation and urban gardening in the Sonoran Desert of Northwestern Mexico
and the Southwestern USA were evaluated whether their growth can be promoted by inoculation with plant growth-promoting bacteria
(Azospirillum brasilense and Bacillus pumilus), unidentified arbuscular mycorrhizal (AM) fungi (mainly Glomus sp.), and supplementation with common compost under regular screenhouse cultivation common to these trees in nurseries. Mesquite
amargo (Prosopis articulata) and yellow palo verde (Parkinsonia microphylla) had different positive responses to several of the parameters tested while blue palo verde (Parkinsonia florida) did not respond. Survival of all tree species was over 80% and survival of mesquite was almost 100% after 10 months of cultivation.
Inoculation with growth-promoting microorganisms induced significant effects on the leaf gas exchange of these trees, measured
as transpiration and diffusive resistance, when these trees were cultivated without water restrictions. |
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| Keywords: | Azospirillum Desert Mesquite Palo verde Parkinsonia Plant growth-promoting bacteria PGPB PGPR Prosopis Reforestation |
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