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논문 기본 정보

자료유형
학술저널
저자정보
Ghasem Tohidloo Mohammad Kazem Souri (Tarbiat Modares University)
저널정보
한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY Vol.50 No.6
발행연도
2009.12
수록면
487 - 491 (5page)

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초록· 키워드

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A series of hydroponic culture experiments were conducted with two different tomato (Lycopersicon esculentum Mill) genotypes (wild type; boron-efficient, and mutant; boron-inefficient) to determine whether the mutant has defect in boron (B) uptake by root cortex cells beside the known defect in active xylem loading which has been detected in Arabidopsis. For this purpose, plants were exposed to different B concentrations of 0.0, 0.1, 0.5, 2, 10, 15, 20, 25, 30, 35, and 100 μM B in different experimental set-ups. Boron concentration was determined in root symplastic sap and xylem exudate of both genotypes. The results showed that B concentration in root symplastic sap of the mutant plants was significantly lower than the wild type in all treatments when compared to each other. Low B concentration was determined in xylem exudates of B mutant plants as well. The result also showed the active xylem loading was present in the wild type but not in the mutant, suggesting defects in B uptake and root-to-shoot translocation of B in the mutant at low B supply. This defect was not seen at high B supply, indicating a passive rather than active uptake and translocation of B in tomato plants at high B supply. Nevertheless, wild type showed no B deficiency under all B concentrations except zero amounts.

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Abstract
Introduction
Materials and Methods
Results
Discussion
Literature Cited

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