数字农科院2.0

Vascular network in the pericarp of tomato fruit and implications for fruit size, quality, and drought response

文献类型： 外文期刊

作者： Hou, Xuemin;Li, Hao;Bertin, Nadia;Brodribb, Tim J.;Du, Taisheng

作者机构：

关键词： Fruit hydraulic architecture;fruit size;vein length density;water deficit;water transport;xylem

期刊名称： JOURNAL OF EXPERIMENTAL BOTANY

ISSN： 0022-0957

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： The importance of the vascular network for transporting water, carbohydrates, and nutrients for sustaining plant growth and development in the vegetative body of plants is well known. Nevertheless, the vascular network within a fruit is still inadequately understood. Here, we characterized the vascular network in the fruit pericarp of 10 tomato genotypes varying in fruit size from 20 to 287 g (fresh mass) and investigated its relationships with typical hydraulic and anatomical traits under well-watered and water deficit conditions. We found that larger fruits had lower vein length density, accompanied by a larger number of xylem vessels within a vascular bundle and lower water uptake capacity per fresh mass. Vein length density was positively correlated with total soluble solids, while negatively correlated with mesocarp cell size. This study highlights the association between the hydraulic function of the fruit peripheral vascular network and fruit size, likely opening up a new research avenue for understanding fruit evolution, aiding in the selection of drought-tolerant genotypes, and encouraging the integration of fruit venation patterns into research. The vascular network in the fruit pericarp of 10 tomato genotypes is closely associated with fruit size and quality under well-watered and water deficit conditions.

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