Difference in Al Sensitivity between Seminal and Crown Roots of Rice Nursery Seedlings (Plant Nutrition)
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概要
- 論文の詳細を見る
The crown roots of rice (Oryza saliva L. cv. Nipponbare) nursery seedlings were more tolerant of Al than the seminal roots, in terms of elongation. Intense hematoxylin staining was observed in the root cap and meristem for the seminal roots, whereas in the meristem for the crown roots, which correspond to the Al concentration in both types of roots. Mottled hematoxylin staining was observed in the basal area, in a region located at approximately 4 mm from the tip of the seminal roots, in contrast to the crown roots, which showed laterally-striped staining. The concentration of callose induced by Al in the seminal roots was comparable to that in the crown roots, regardless of the root growth. Confocal laser scanning microscopy of roots stained with fluorescein diacetate-propidium iodide (FDA-PI) indicated that the plasma membrane of the epidermis of the root tip was damaged even in the absence of Al treatment. Al further impaired the plasma membrane of the root cap cells in the seminal and crown roots to a similar extent. These findings contradicted typical Al-injury phenomenon reported for Al-sensitive and Al-tolerant plants. It is also likely that different metabolic processes operate in the crown and seminal roots. Crown roots can develop Al tolerance either constitutively or inductively by exposure to Al. A comparison of gene expression should lead to the isolation of the genes that confer Al tolerance in higher plants.
- 社団法人日本土壌肥料学会の論文
著者
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MORI Satoshi
Department of Applied Biological Chemistry, Division of Agriculture and Agricultural Life Sciences,
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Nagasaka Seiji
Core Research for Evolutional Science and Technology (CREST)
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NISHIMURA Shintaro
The Medical and Pharmacological Research Center Foundation
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Matsuhashi S
Takasaki Advanced Radiation Research Institute Japan Atomic Energy Agency
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Yoshimura Etsuro
Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The U
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Mori Satoshi
Department Of Agricultural Chemistry Faculty Of Agriculture The University Of Tokyo
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Mori S
Department Of Applied Biological Chemistry The University Of Tokyo
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Nagasaka Seiji
Department of Applied Biological Chemistry, The University of Tokyo
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Teraoka Tsuyoshi
Department of Applied Biological Chemistry, The University of Tokyo
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Matsumoto Sayoko
Department of Applied Biological Chemistry, The University of Tokyo
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Nagasaka Seiji
Department Of Applied Biological Chemistry The University Of Tokyo
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Mori S
Meijo Univ. Aichi Jpn
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Teraoka Tsuyoshi
Department Of Applied Biological Chemistry The University Of Tokyo
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Matsumoto Sayoko
Department Of Applied Biological Chemistry The University Of Tokyo
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Yoshimura E
Univ. Tokyo Tokyo Jpn
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Yoshimura Etsuro
Department Of Applied Biological Chemistry Graduate School Of Agricultural And Life Sciences The Uni
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Yoshimura Etsuro
Department of Agricultural Chemistry, The University of Tokyo
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