GLOSER, Vít, Halyna KOROVETSKA, Ana Isabel Martín VERTEDOR, Martina HÁJÍČKOVÁ, Zbyněk PROKOP, Sally WILKINSON and William DAVIES. The Dynamics of Xylem Sap pH under Drought: a Universal Response in Herbs? PLANT AND SOIL. Springer, 2016, vol. 409, 1-2, p. 259-272. ISSN 0032-079X. Available from: https://dx.doi.org/10.1007/s11104-016-2962-6.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name The Dynamics of Xylem Sap pH under Drought: a Universal Response in Herbs?
Authors GLOSER, Vít (203 Czech Republic, guarantor, belonging to the institution), Halyna KOROVETSKA (804 Ukraine, belonging to the institution), Ana Isabel Martín VERTEDOR (724 Spain, belonging to the institution), Martina HÁJÍČKOVÁ (203 Czech Republic, belonging to the institution), Zbyněk PROKOP (203 Czech Republic, belonging to the institution), Sally WILKINSON (826 United Kingdom of Great Britain and Northern Ireland) and William DAVIES (826 United Kingdom of Great Britain and Northern Ireland).
Edition PLANT AND SOIL, Springer, 2016, 0032-079X.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 30105 Physiology
Country of publisher Netherlands
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 3.052
RIV identification code RIV/00216224:14310/16:00092836
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1007/s11104-016-2962-6
UT WoS 000390034900018
Keywords in English Soil drying; Xylem sap; Nitrate; Malate
Tags AKR, rivok
Tags International impact, Reviewed
Changed by Changed by: Ing. Andrea Mikešková, učo 137293. Changed: 14/4/2017 14:14.
Abstract
Long distance signals in xylem from roots to leaves are important in plant response to drought stress. Abscisic acid (ABA) plays a key role in drought signaling in plants but apoplastic pH may modulate its effect by distributing ABA into various compartments in leaves. We aimed to reveal the dynamics of changes in sap pH and its relationships with the transport of inorganic and organic ions in eight herbaceous plant species under continuously declining soil water content. We tested several hypotheses related to the mechanism of pH changes in xylem. We used a pressure chamber to collect xylem sap and to measure of leaf/stem water potential at various stages of soil drying. We measured pH and concentrations of the most abundant inorganic (NO3, SO42, PO43 and Cl) and organic (malate and citrate) anions in xylem sap. Species differed considerably in the dynamics of pH changes in xylem in drying soil. Changes in xylem sap pH during drying did not relate to the nitrogen assimilation strategy but may be affected by sap flow rate. Simultaneous changes in the concentrations of inorganic and organic anions were highly species specific. High variability among species in the observed relationships in response to drought indicates that comparisons among different studies and the generalization of results should be made with caution.
PrintDisplayed: 26/4/2024 04:48