Fitting plants to soil through mycorrhizal fungi: Mycorrhiza effects on plant growth and soil organic matter   总被引：5，自引：0，他引：5  

M. Quintero-Ramos  D. Espinoza-Victoria  R. Ferrera-Cerrato  G. J. Bethlenfalvay 《Biology and Fertility of Soils》1993,15(2):103-106

Summary Vesicular-arbuscular mycorrhizal (VAM) fungi affect diverse aspects of plant form and function. Since mycorrhiza-mediated changes in host-plant responses to root colonization by different VAM fungi vary widely, it is important to assess each endophyte for each specific effect it can elicit from its host as part of the screening process for effectiveness. Three species of VAM fungi and a mixture of species were compared with non-VAM controls for their effects on soil organic matter contents and on nutrition and morphology in two varieties (native and hybrid) of corn (Zea mays L.) and one of sunflower (Helianthus annuus L.) in P-sufficient and N-deficient soil in pot cultures. Differences in soil organic matter due to the fungal applications were highly significant with all host plants. Native corn responded more to VAM colonization than the hybrid did; differences in treatments were significant in leaf area, plant biomass, and root: shoot ratio in the former, but not in the latter. Responses in the sunflower were similar to those in the native corn. Significant VAM treatment-related differences in shoot N and P contents were not reflected in shoot biomass, which was invariant. Correlations between plant or soil parameters and the intensity of VAM colonization were found only in soil organic matter with the native corn, in specific leaf area in the hybrid corn, and in plant biomass in the sunflower. The presence of the different endophytes and not the intensity of colonization apparently elicited different host responses.  相似文献   

The Effect of Nixtamalization Extrusion Process and Tortillas Making on the Stability of Anthocyanins from Blue Corn through the Kinetic and Thermodynamic Parameters     

Menchaca-Armenta  Mariela  Frutos  María José  Ramírez-Wong  Benjamín  Quintero-Ramos  Armando  Torres-Chávez  Patricia Isabel  Valero-Cases  Estefanía  Muelas-Domingo  Raquel  Ledesma-Osuna  Ana Irene  Campas-Baypoli  Olga Nydia 《Plant foods for human nutrition (Dordrecht, Netherlands)》2021,76(3):334-339

Plant Foods for Human Nutrition - The blue corn-based products are considered functional foods due to their high concentration of anthocyanins. The aim of this study was to estimate the kinetic and...  相似文献   

Fitting plants to soil through mycorrhizal fungi: plant nutrition in host-endophyte combinations evaluated by the diagnosis and recommendation integrated system     

D. Espinoza-Victoria  M. Quintero-Ramos  R. Ferrera-Cerrato  G. J. Bethlenfalvay 《Biology and Fertility of Soils》1993,15(2):96-102

Summary Vesicular-arbuscular mycorrhizal (VAM) fungi improve plant growth in marginal soils. This study was conducted to determine the effects of three species of VAM fungi on plant nutrition in two cultivars of corn (Zea mays L.) and one of sunflower (Helianthus annus L.). Plants were grown in pot cultures under controlled (greenhouse) conditions in a soil high in K, Mg, and P, and low in Ca and N, and were supplied with amounts of VAM-fungal inocula in which equal numbers of infective propagules had previously been determined. Analysis of variance showed highly significant main effects and interactions due to both factors (plant and fungus) for N, P, Ca, and Mg. For K, only plant effects were significant (P<0.043). The uptake of nutrients was selectively enhanced or inhibited by one or the other VAM fungus relative to non-VAM control plants. In sunflower, N concentration was markedly enhanced (73%) by the mixed inoculum of the three fungi, even though individual effects were not significant. Evaluation of leaf nutrient analyses by the Diagnosis and Recommendation Integrated System (DRIS) revealed the utility of this system to rank nutritional effects by VAM fungi in an order of relative nutrient deficiency. The DRIS therefore is seen as a useful tool in evaluating and selecting VAM fungi for the alleviation of specific nutrient disorders.Work was funded by the Program in Science and Technology Cooperation, Office of the Science Advisor, Agency for International Development, as Project No. 8.055, and was conducted in collaboration at the Colegio de Postgraduados and the Western Regional Research Center  相似文献