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Effect of Inoculation with Arbuscular Mycorrhizal Fungus on Nitrogen and Phosphorus Utilization in Upland Rice-Mungbean Intercropping System

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Agricultural Sciences in China 2010年第4期9卷 528-535页

作者： XIAO Tong-jian YANG Qing-song RAN Wei XU Guo-hua SHEN Qi-rong Department of Plant Nutrition College of Resoures and Environmental Sciences Nanjing Agricultural University Nanjing 210095 P.R.China

The effect of arbuscular mycorrhiza fungi （AMF） on plant growth and nutrition utilization in upland rice and mungbean intercropping system was studied. A pot experiment was conducted in the greenhouse and AMF colonization rates of rice and mungbean roots, plant nutrient contents, the ability of nitrogen fixation, and nutrient contents changed in the soil were analyzed. The results were obtained as follows： the rates of AMF colonization of rice and mungbean roots were reached to 14.47 and 92.2% in intercopping system, and increased by 4.11 and 11.95% compared with that of in monocropping; the nirtrogen contents of mungbean and rice were increased by 83.72 and 64.83% in shoots, and 53.76 and 41.29% in roots, respectively, while the contents of iron in shoot and root of mungbean were increased by 223.08 and 60.19%, respectively. In the intercropping system with inoculation of AMF, the biomass of mungbean increased by 288.8%. However, the biomass of rice was not significantly changed among all treatments with or without inoculation of AMF recorded. The number and dry weight of nodules were significantly increased either when mungbean was intercropped with rice or inoculated with AMF. When compared with that of monocropping without AMF inoculation, the contents of nitrogen, phosphorus and iron in nodules of intercropping mungbean with inoculation increased by 80.14, 69.54 and 39.62%, respectively. Additionally, intercropping with AMF inoculation significantly increased soil nitrogen content, but reduced soil phosphorus content. We concluded that upland rice-mungbean intercropping system and inoculation with AMF improved the nutrient uptake, the ability of nitrogen fixation and the growth of mungbean.

关键词： mungbean rice arbuscular mycorrhizal fungi (AMF) intercropping nitrogen phosphorus iron root nodule

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Phosphorus and Nitrogen Interactions in Field-Grown Soybean as Related to Genetic Attributes of root Morphological and Nodular Traits

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Journal of Integrative Plant Biology 2005年第5期47卷 549-559页

作者： Rui-BinKUANG HongLIAO Xiao-LongYAN Ying-ShanDONG LaboratoryofPlantNutritionalGeneticsandrootBiologyCenter SouthChinaAgriculturalUniversityGuangzhou510642China LaboratoryofAgrobiotechnology JilinAcademyofAgriculturalSciencesJilin136100China

Two field experiments with different soybean (Glycine max L.) materials were conducted to investigate the interactions between phosphorus (P) and nitrogen (N) as related to the genetic attributes of root morphological and nodular traits. In experiment one, 13 cultivated soybean varieties were grown in a field with relatively low soil P and N availability. P application with 160 kg P/hm2 as triple superphosphate produced a significant simultaneous increase in the content of both P and N in shoot, demonstrating positive P and N interactions. The addition of P also increased root dry weight, root nodule number, nodule mass, nodule size, and nodulation index, but decreased root length and root surface area, indicating that P may affect N nutrition in soybean through a number of root morphological and nodular traits. Interestingly, like P content, N content appeared to be more correlated with root morphological traits (root weight, root length, and root surface area) than with root nodular traits (nodule number, nodule size, nodule mass, and nodulation index) at both P levels, implying that N taken up by the roots may contribute more to the plant N status than biological N2 fixation under the present experimental conditions. In experiment two, 57 soybean lines of a recombinant inbred line (RIL) population derived from a cross between a cultivated variety and a wild genotype were grown on another field site with moderately sufficient P and N levels to further characterize the genetic attributes of root morphological and nodular traits and their relationships with P and N interactions. The results indicated that all morphological and nodular traits measured continually segregated in the RIL population with a normal distribution of the phenotypic values, indicating that these traits are possibly controlled by quantitative trait loci (QTLs). Genetic analysis revealed that all these root traits had relatively low heritabilities (h2b=74.12,70.65,73.76,56.34,52.59, and 52.24 fo

关键词： nitrogen (N) phosphorus (P) recombinant inbred lines (RILs) root morphology root nodule soybean (Glycine max L.)

Organic matter contribution to soil fertility improvement and maintenance in red Alder (Alnus rubra) silvopastoral systems

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Journal of Forestry Research 2008年第1期19卷 49-52页

作者： Ronnie M. Mmolotsi Zewge Teklehaimanot Botswana College of Agriculture Private Bag 0027GaboroneBotswana University of Wales BangorGwyneddLL57 2UWUK

An investigation was conducted to quantify fine roots and roots nodules over the four seasons in forestry and agroforestry alder （Alnus rubra） stands in North Wales. Soil samples collected in each season were excavated at three sampling points （0.30 m, 0.57 m and 1.00 m distance from the base of each tree） from nine trees of the agroforestry and forestry plots. Result showed that the density of live fine root had significant differences in between seasons and treatments （P 〈 0.001）. The mean weight density of live fine root over the four seasons in agroforestry and forestry was 0.27±0.01 kg·m^-3 and 0.54±0.03 kg·m^-3, respectively. Weight density of dead root in each system remained constant throughout the year. The mean weight density of dead root was also significantly different （P 〈 0.01） between forestry and agroforestry systems. Weight density of live and dead root nodule was both constant throughout the year and between the different sampling distances. The mean weight densities of live and dead root nodule over the four seasons were 0.09±0.03 kg·m^-3 and 0.05±0.03 kg·m^-3 in agroforestry and 0.08±0.02 kg·m^-3 and 0.03±0.01 kg·m^-3 in the forestry plots, respectively.

关键词： alder Alnus rubra root nodule fine root nitrogen

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A proteomics approach to understanding symbiotic nitrogen fixation in soybean

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A proteomics approach to understanding symbiotic nitrogen fi...

第十四届全国植物基因组学大会

作者： Wei Liu Weicai Yang State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of Sciences

Soybean(Glycine max) is an important oil crop and one of the major food protein sources in *** to other crop plants whose growth relying on the industrial fertilizer supply,soybean,as a legume species,can get unlimite... 详细信息

关键词： soybean root nodule symbiosome nitrogen-fixation proteomics

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苜蓿豆血红蛋白cDNA的分子克隆

生物工程学报 1988年第3期 222-225页

作者：荆玉祥 Moo Je Cho 鲍绍琦温杰布里尔中国科学院植物研究所 Gyeongsang大学农学院农化系美国威斯康辛大学细菌学系

豆血红蛋白是一种与动物肌红蛋白相似的蛋白,是共生固氮根瘤的蛋白。豆血红蛋白结合氧,并对固氮类菌体进行氧分压的调节。我们对苜蓿根瘤豆血红蛋白的组分、性质及其 mRNA 和合成的转译水平调节等进行了研究。本文在合成苜蓿豆血红蛋白 ... 详细信息

豆血红蛋白是一种与动物肌红蛋白相似的蛋白,是共生固氮根瘤的蛋白。豆血红蛋白结合氧,并对固氮类菌体进行氧分压的调节。我们对苜蓿根瘤豆血红蛋白的组分、性质及其 mRNA 和合成的转译水平调节等进行了研究。本文在合成苜蓿豆血红蛋白 cDNA 的基础上报道其分子克隆的初步结果。

关键词： cDNA clone leghemoglobin root nodule alfalfa