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The enhancement of drought tolerance for pigeon pea inoculated by arbuscular mycorrhizae fungi

Author

Listed:
  • G. Qiao

    (Guizhou Key Laboratory of Agricultural Bioengineering, Guizhou University, Guiyang, P.R. China)

  • X.P. Wen

    (Guizhou Key Laboratory of Agricultural Bioengineering, Guizhou University, Guiyang, P.R. China)

  • L.F. Yu

    (School of Forestry Science, Guizhou University, Guiyang, P.R. China)

  • X.B. Ji

    (Guizhou Key Laboratory of Agricultural Bioengineering, Guizhou University, Guiyang, P.R. China)

Abstract

Pigeon pea (Cajanus cajan) has been rapidly grown in the drought-striken Karst regions of southwest China. Present research aimed to investigate the effects of arbuscular mycorrhizae (AM) on the drought tolerance of pigeon pea, as well as to elucidate the physiological responses of AM-colonized seedlings to the water deficit. As subjected to drought stress, AM symbiosis (AMD) highly led to the positive effects on root system, plant height and stem diameter. AMD demonstrated a remarkably higher chlorophyll content, photosynthetic rate and stomatal conductance. The soluble sugar in AMD was significantly higher than that of the non-AM seedlings (NAMD), indicating the enhanced tolerance at least partially correlated with osmotic solute. Conversely, the proline (Pro) of AMD was lower, revealing the excessive Pro was not imperative for drought tolerance. After 30 days drought stress, AMD gave around a third less lipid peroxides than that of NAMD. Rather, the root activities of AMD were significantly higher than that of the latter after 10 days drought stress. Thereby, AM fungi might substantially elevate the tolerance to drought of pigeon pea, and the cumulative effects contributed to the enhanced tolerance. To date, this has been the first report concerning the enhancement of drought tolerance via AM colonization in this legume species.

Suggested Citation

  • G. Qiao & X.P. Wen & L.F. Yu & X.B. Ji, 2011. "The enhancement of drought tolerance for pigeon pea inoculated by arbuscular mycorrhizae fungi," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 57(12), pages 541-546.
    • Handle: RePEc:caa:jnlpse:v:57:y:2011:i:12:id:116-2011-pse
    DOI: 10.17221/116/2011-PSE
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    References listed on IDEAS

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    1. Q.S. Wu & Y.N. Zou & W. Liu & X.F. Ye & H.F. Zai & L.J. Zhao, 2010. "Alleviation of salt stress in citrus seedlings inoculated with mycorrhiza: changes in leaf antioxidant defense systems," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 56(10), pages 470-475.
    2. Zhongfu Ni & Eun-Deok Kim & Misook Ha & Erika Lackey & Jianxin Liu & Yirong Zhang & Qixin Sun & Z. Jeffrey Chen, 2009. "Altered circadian rhythms regulate growth vigour in hybrids and allopolyploids," Nature, Nature, vol. 457(7227), pages 327-331, January.
    3. M. Vanaja & P.R. Ram Reddy & N.J. Lakshmi & S.K. Abdul Razak & P. Vagheera & G. Archana & S.K. Yadav & M. Maheswari & B. Venkateswarlu, 2010. "Response of seed yield and its components of red gram (Cajanus cajan L. Millsp.) to elevated CO2," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 56(10), pages 458-462.
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