Plant high tolerance to excess manganese related with root growth, manganese distribution and antioxidative enzyme activity in three grape cultivars

TY - JOUR

T1 - Plant high tolerance to excess manganese related with root growth, manganese distribution and antioxidative enzyme activity in three grape cultivars

AU - Mou, Dongling

AU - Yao, Yinan

AU - Yang, Yongqing

AU - Zhang, Yuanming

AU - Tian, Changyan

AU - Achal, Varenyam

N1 - Funding Information: The research was supported by the Program of “100 Distinguished Young Scientists” and National Basic Research Program ( 2009CB825104 ) and the program of “Guizhou outstanding youth talent in science and technology”.

PY - 2011/5

Y1 - 2011/5

N2 - The cuttings of grape (Vitis vinifera Linn.) were exposed to Hoagland's solution containing five different manganese (Mn) concentrations to investigate Mn toxicity and the possible detoxifying responses. Three genotypes (i.e. cultivars Combiner, Jingshou and Shuijing) were used in present study. The results showed that grape species is highly tolerant to excess Mn. The plant growth is stimulated by as high as 15 or 30. mM Mn, and then depressed by higher Mn levels. The grape tolerance to excess Mn is related with plant capacity to keep constant or increased root growth as well as to keep high root activity. Also, the grape could employ some effective but intraspecific strategies to detoxify cellular Mn stress by excluding excess Mn out of leaf tissues or by enhancing antioxidative capacity. On the other hand, the present study showed that there existed different (or contrast) distribution pattern for excess Mn in grape. Majority of Mn was transferred and accumulated in the above-ground part in Combiner while Jingshou stored most Mn in root systems. For the first time our result showed the extreme tolerance and contrast performance at Mn translocation in an important fruit species with revealed genomic information.

AB - The cuttings of grape (Vitis vinifera Linn.) were exposed to Hoagland's solution containing five different manganese (Mn) concentrations to investigate Mn toxicity and the possible detoxifying responses. Three genotypes (i.e. cultivars Combiner, Jingshou and Shuijing) were used in present study. The results showed that grape species is highly tolerant to excess Mn. The plant growth is stimulated by as high as 15 or 30. mM Mn, and then depressed by higher Mn levels. The grape tolerance to excess Mn is related with plant capacity to keep constant or increased root growth as well as to keep high root activity. Also, the grape could employ some effective but intraspecific strategies to detoxify cellular Mn stress by excluding excess Mn out of leaf tissues or by enhancing antioxidative capacity. On the other hand, the present study showed that there existed different (or contrast) distribution pattern for excess Mn in grape. Majority of Mn was transferred and accumulated in the above-ground part in Combiner while Jingshou stored most Mn in root systems. For the first time our result showed the extreme tolerance and contrast performance at Mn translocation in an important fruit species with revealed genomic information.

KW - Antioxidative enzyme

KW - Hypertolerance

KW - Manganese transfer

KW - Root growth

KW - Vitis vinifera

UR - http://www.scopus.com/inward/record.url?scp=79955524299&partnerID=8YFLogxK

U2 - 10.1016/j.ecoenv.2010.10.040

DO - 10.1016/j.ecoenv.2010.10.040

M3 - 文章

C2 - 21075449

AN - SCOPUS:79955524299

SN - 0147-6513

VL - 74

SP - 776

EP - 786

JO - Ecotoxicology and Environmental Safety

JF - Ecotoxicology and Environmental Safety

IS - 4

ER -