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논문 기본 정보

자료유형
학술저널
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한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY JOURNAL OF THE KOREAN SOCIETY FOR HORTICULTURAL SCIENCE Vol.45 No.4
발행연도
2004.8
수록면
183 - 188 (6page)

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이 논문의 연구 히스토리 (2)

2004

Distribution of Metal Cations in Apoplastic Washing Fluid in Arbuscular Mycorrhizal Lettuce Plants
Yun-Jeong Lee HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY 2004.08 학술저널

2002

Study on the Metal Cations Uptake Mechanism Related to the Interaction with Phosphorus in Arbuscular Mycorrhizal Vegetables
Yun-Jeong Lee ,  Eckha ,  d Geo 외 3명 한국원예학회 학술발표요지 2002.06 학술대회자료

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The distribution of metal cations in arbuscular mycorrhizal plants including apoplastic washing fluid in root was investigated. A centrifugation method for extracting apoplastic sap was modified to measure the metal concentrations in apoplastic washing fluid. In addition, a nutrient film technique (NFT) system was modified for production of large amounts of extraradical fungal hyphae to facilitate measuring metal concentration in the fungal mycelium itself. A high level of root colonization was maintained in the NFT system. The fungal biomass from NFT system was collected as much as 1 g fresh weight. Metal concentrations of external fungal hyphae were high in all metal elements (Cu, Zn, Cd, and Ni) tested without large difference between metal elements compared to those of root concentration. Mycorrhizal colonization resulted in higher shoot Cu and Zn concentrations and lower shoot Ni concentration than those in non-mycorrhizal plants. In water-soluble apoplastic washing fluid of the plant, Cu concentration was much lower than that of non-mycorrhizal plants. However, there was no difference in the Zn, Cd, and Ni concentrations in apoplastic washing fluid of mycorrhizal and non-mycorrhizal roots. The ratio of hyphae/root concentration was higher for Cu compared to that for Zn. The ratio of root/shoot concentration of Ni was higher in mycorrhizal plants compared to that in non-mycorrhizal plants. Therefore, we suggest that external fungal hyphae acquired all of the four metals (Cu, Zn, Cd, and Ni) non-selectively but the transfer of each metal from fungal hyphae to plants was different. In mycorrhizal roots, Cu may be remained mostly in the fungal part, e.g., arbuscule, and Zn may be translocated more preferentially from roots to shoots in mycorrhizal plants. Translocation of Ni from roots to shoots was restricted in AM plants. It may be due to immobilization of Ni in fungal hyphae indicating a protective effect of the fungus in AM plants against the toxic effect of Ni.
#Glomus mosseae #mycorrhizal colonization #mycorrhizal hyphae #nutrient film technique #nutrient translocation

목차

Abstract
Introduction
Materials and Methods
Results
Discussion
Acknowledgements
Literature Cited

참고문헌 (24)

참고문헌 신청
[학술지(정기간행물)] - / 1992 / Nutritional disorders of plants google schola [학술지(정기간행물)] - / / Elemental composition and function of polyphosphates in ectomycorrhizal fungi- an X-ray microanalytical study 103 : 31 ~ 39 google schola [학술지(정기간행물)] - / 1998 / Studies of iron transport by arbuscular mycorrhizal hyphae from soil to peanut and sorghum plants 8 : 35 ~ 39 google schola [학술지(정기간행물)] - / 1995 / Isolation of apoplasmic fluid from sunflower leaves and its use for studies on influence of nitrogen supply on apoplasmic pH 141 : 273 ~ 278 google schola [학술지(정기간행물)] - / 1990 / Zinc uptake in corn affected by vesicular-arbuscular mycorrhizae google schola

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