Spatial heterogeneity of flesh-cell osmotic potential in sweet cherry affects partitioning of absorbed water
作者机构：Institut für Gartenbauliche ProduktionssystemeLeibniz Universität HannoverAbteilung ObstbauHerrenhäuser Straße 2D-30419 HannoverGermany Forschungszentrum JülichIBG-2:PflanzenwissenschaftenWilhelm-Johnen-StraßeD-52428 JülichGermany Laser Zentrum Hannover e.V.Hollerithallee 8D-30419 HannoverGermany
出 版 物：《Horticulture Research》 (园艺研究（英文）)
年 卷 期：2020年第7卷第1期
页 面：2104-2113页
核心收录：
学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 1001[医学-基础医学(可授医学、理学学位)] 09[农学] 0901[农学-作物学] 0703[理学-化学] 0836[工学-生物工程] 0902[农学-园艺学] 090201[农学-果树学] 0834[工学-风景园林学（可授工学、农学学位）]
基 金：financed by the Open Access Fund of the Leibniz Universität Hannover
摘 要：A fleshy fruit is commonly assumed to resemble a thin-walled pressure vessel containing a homogenous carbohydrate *** sweet cherry(Prunus avium L.)as a model system,we investigate how local differences in cell water potential affect H2O and D2O(heavy water)*** partitioning of H2O and D2O was mapped nondestructively using magnetic resonance imaging(MRI).The change in size of mesocarp cells due to water movement was monitored by optical coherence tomography(OCT,non-destructive).Osmotic potential was mapped using microosmometry(destructive).Virtual sections through the fruit revealed that the H2O distribution followed a net pattern in the outer mesocarp and a radial pattern in the inner *** patterns align with the disposition of the vascular bundles.D2O uptake through the skin paralleled the acropetal gradient in cell osmotic potential gradient(from less negative to more negative).Cells in the vicinity of a vascular bundle were of more negative osmotic potential than cells more distant from a vascular *** revealed net H2O uptake was the result of some cells loosing volume and other cells increasing volume.H2O and D2O partitioning following uptake is non-uniform and related to the spatial heterogeneity in the osmotic potential of mesocarp cells.
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