Functional Plant Biology ( IF 3 ) Pub Date : 2020-07-16 , DOI: 10.1071/fp20076 Adolfo Rosati 1 , Silvia Caporali 2 , Sofiene B M Hammami 3 , Inmaculada Moreno-Alías 4 , Hava Rapoport 4
The relationship between tissue (mesocarp and endocarp) growth and either tissue initial (i.e. in the ovary at bloom) size or cell number was studied using the olive cultivar Leccino (L) and its mutated clone (LC), which produces tetraploid fruits. LC ovaries were 2.7 times the volume of L ovaries, but contained an overall similar number of much larger cells. This allowed decoupling cell number and ovary size, which are normally closely correlated. With this decoupling, cell number in the ovary correlated with tissue growth in the fruit while tissue size in the ovary did not. Cell size in the ovary was inversely correlated with the tissue relative growth from bloom to harvest (i.e. the ratio between final and initial tissue size). These results support the hypothesis that cell number and not tissue size are related to fruit growth and sink strength, and that cell size in the ovary tissues is a good predictor of tissue growth, across cultivars and tissues, even when cell size is strongly affected by ploidy.
中文翻译:
橄榄(油橄榄)的果实生长和下沉强度与细胞数量有关,与组织大小无关。
使用橄榄栽培品种Leccino(L)及其突变克隆(LC)研究了组织(中果皮和内果皮)生长与组织初始大小(即在开花时的卵巢中)的大小或细胞数量之间的关系,该突变体产生四倍体果实。LC卵巢的体积是L卵巢的2.7倍,但总体上具有相似数量的大得多的细胞。这允许去耦细胞数量和卵巢大小,这通常是密切相关的。通过这种脱钩,卵巢中的细胞数量与果实中的组织生长相关,而卵巢中的组织大小则不相关。卵巢中的细胞大小与从开花到收获的组织相对生长成反比(即最终和初始组织大小之间的比率)。