temporal and spatial expression of polygalacturonase gene family members reveals divergent regulation during fleshy fruit ripening and abscission in the monocot species oil palm聚半乳糖醛酸酶基因的时空表达家庭成员显示不同的监管在肉质果实成熟和油棕离层在单子叶植物物种.pdf

Temporal and spatial expression of polygalacturonase gene family members reveals divergent regulation during fleshy fruit ripening and abscission in the monocot species oil palm Roongsattham et al. Roongsattham et al. BMC Plant Biology 2012, 12:150 /1471-2229/12/150 Roongsattham et al. BMC Plant Biology 2012, 12:150 /1471-2229/12/150 RESEARCH ARTICLE Open Access Temporal and spatial expression of polygalacturonase gene family members reveals divergent regulation during fleshy fruit ripening and abscission in the monocot species oil palm 1 2 3 1 2 Peerapat Roongsattham , Fabienne Morcillo , Chatchawan Jantasuriyarat , Maxime Pizot , Steven Moussu , 4 1 4 5 1 Dasuni Jayaweera , Myriam Collin , Zinnia H Gonzalez-Carranza , Philippe Amblard , James W Tregear , 6 7 1* Somvong Tragoonrung , Jean-Luc Verdeil and Timothy J Tranbarger Abstract Background: Cell separation that occurs during fleshy fruit abscission and dry fruit dehiscence facilitates seed dispersal, the final stage of plant reproductive development. While our understanding of the evolutionary context of cell separation is limited mainly to the eudicot model systems tomato and Arabidopsis, less is known about the mechanisms underlying fruit abscission in crop species, monocots in particular. The polygalacturonase (PG) multigene family encodes enzymes involved in the depolymerisation of pectin homogalacturonan within