Nectary Specification in Petunia and Arabidopsis

First author: Jennifer Mach; Affiliations: The Plant Cell 2958 N Kilbourn Ave: Chicago, USA

Corresponding author: Jennifer Mach

Studies of flower development have lots of information about petals, carpels (心皮), and stamens, but let’s not forget the birds and the bees-and the flies and moths-and what draws pollinators (授粉者) to insect-pollinated flowers, including flower color, shape, and rewards that provide energy. For example, to attract pollinators, many plants produce sugar-rich nectar (花蜜), secreted from specialized organs called nectaries (蜜腺). One tricky (and by tricky, I mean fascinating) aspect of studying nectaries is that different species develop nectaries in different positions relative to the more conserved positions of the other floral organs. Indeed, most angiosperm species develop nectaries near the carpels or stamens, but some develop nectaries on the petiole (叶柄) or at the base of the leaf.

关于植物花的研究多数关注的是花瓣、心皮和雄蕊等方面，还有鸟、蜜粉、苍蝇和飞蛾及吸引昆虫授粉的花部特征，包括花色、形状以及吸引昆虫的能量物质。比如说，有些植物通过产生富含蔗糖的花蜜来吸引授粉者，这些花蜜由植物特异的器官，即蜜腺所分泌。对于花蜜腺组织的研究其中一个令人着迷的地方在于相对于其它位置相对保守的花器官位置，蜜腺在不同植物物种中的位置差别很大。大多数被子植物的蜜腺在心皮或是雄蕊附近，而有些植物的蜜腺在叶柄部位或是叶片基部形成。

p.s. 本文介绍了里昂高等师范学院Michiel Vandenbussche八月份在PLANT CELL上发表的一篇关于开花基因ABC模型中C类基因参与矮牵牛与拟南芥蜜腺特化的文章（The floral C-lineage Genes Trigger Nectary Development in Petunia and Arabidopsis）。

doi: https://doi.org/10.1105/tpc.18.00692

Journal: Plant Cell

First Published: 10 September, 2018

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