지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Structural aspects of highly reduced vegetative organs in the aquatic Spirodela polyrhiza were examined using scanning and transmission electron microscopy. The study focused mainly on young and mature fronds with turions and their cellular features were compared. Mature fronds were composed of thin-walled chlorenchyma with highly vacuolated cells; most of which were frequently occupied by either tanniferous deposits or various crystals. Fronds of photoautotrophic offspring were produced from the meristematic region of the reproductive pockets within mother fronds, where they remained until separation. Moderate degrees of wall ingrowth and plasmalemma proliferation were detected briefly in the epidermis of daughter fronds during early development. Vascular tissues were generally much reduced, but air chambers were well-established in fronds. Chloroplasts having grana with several thylakoids were distributed throughout the plant, but starch grains were encountered frequently in the mesophyll chloroplasts of younger fronds and initial stage of the turion. Their cytoplasm was dense with small vacuoles in most cases. Further, big starch grains, up to several microns, occupying most of the plastid volume were formed in the turion prior to sink for overwintering. Plasmodesmata were numerous in the examined tissues, except mature turions, suggesting a symplastic pathway of the metabolites within body.
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참고문헌 (18)
참고문헌 신청
Appenroth K J / 1993 / Photophysiology of turion germination in Spirodela polyrhiza (L.) Schleiden XI. Structural changes during red light induced responses / J. Plant Physio
Beaumont G / 1980 / Effects physiologiques de l’atrazine doses subl tales sur Lemna minor. V. Influence sur l’ultrastructure des chloroplastes / Can. J. Bot 58 : 1571 ~ 157
Bernard F A / 1990 / Flower structure, anatomy and life history of Wolffia australiana (Benth.) den Hartog & van der Plas. Bull / Torrey Bot. Club 117 : 18 ~ 26
Echlin P / 1982 / Low-temperature X-ray microanalysis of the differentiating vascular tissue in root tips of Lemna minor L / J. Microsc 126 : 285 ~ 306
Echlin P / 1992 / Low-Temperature Microscopy and Analysis / Plenum Press : 349 ~ 411
Beaumont G / 1980 / Effects physiologiques de l’atrazine doses subl tales sur Lemna minor. V. Influence sur l’ultrastructure des chloroplastes / Can. J. Bot 58 : 1571 ~ 157
Bernard F A / 1990 / Flower structure, anatomy and life history of Wolffia australiana (Benth.) den Hartog & van der Plas. Bull / Torrey Bot. Club 117 : 18 ~ 26
Echlin P / 1982 / Low-temperature X-ray microanalysis of the differentiating vascular tissue in root tips of Lemna minor L / J. Microsc 126 : 285 ~ 306
Echlin P / 1992 / Low-Temperature Microscopy and Analysis / Plenum Press : 349 ~ 411
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