TAILIEUCHUNG - Báo cáo lâm nghiệp: "Sucrose synthase expression pattern in the rhythmically growing shoot of common oak (Quercus robur L.)"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:"Sucrose synthase expression pattern in the rhythmically growing shoot of common oak (Quercus robur L.)" | Ann. For. Sci. 62 2005 585-591 INRA EDP Sciences 2005 DOI forest 2005051 585 Original article Sucrose synthase expression pattern in the rhythmically growing shoot of common oak Quercus robur L. Rozenn Le Hir Sandrine Pelleschi-Travier Jean-Daniel VIÉMONT Nathalie Leduc UMR SAGAH A-462 Laboratoire Morphogenèse des Ligneux UFR Sciences 2 boulevard Lavoisier 49045 Angers Cedex 01 France Received 19 May 2004 accepted 24 March 2005 Abstract - In the search for a trophic control of rhythmic growth of young oak seedlings sucrose synthase accumulation localization and activity were studied in the apex underlying internodes and leaves during the second flush of shoot growth. The use of an anti-SuSy antibody raised against the Vicia faba protein allowed the detection of SuSy which showed a 90 kDa subunit. This antibody used to immunolocalize the SuSy protein in oak revealed a positive signal in the reserve parenchyma tissues of the apex and in the leaf vascular tissues and underlying internodes. The study of SuSy activity along with the growth pattern of the different organs suggested that SuSy may be involved in the control of rhythmic growth through the mobilization of sucrose in storage tissues and through loading unloading processes. Such activities would help to bring enough nutrients to support the high morphogenic and growth processes during the rhythmic growth of the shoot. common oak rhythmic growth bud sugar metabolism sink strength Résumé - Localisation et activité de la saccharose synthase au cours de la croissance rythmique de l axe aérien du chêne pédonculé Quercus robur L. . Afin d evaluer l existence d un contrôle trophique dans la croissance rythmique l accumulation la localisation et l activite de la saccharose synthase ont été étudiées au sein de l apex de l entre-nreud sous-jacent et des feuilles au cours de la deuxième vague de croissance chez le chêne pédonculé. L utilisation d un anticorps anti-SuSy de Vicia faba a permis de détecter la .

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