Effect of partial root excision on transpiration, root hydraulic conductance and leaf growth in wheat seedlings

Autor:	T.N. Arkhipova, Aleksandr V. Dedov, Guzel R. Kudoyarova, Stanislav Yu. Veselov, Leila N. Timergalina, Lidia B. Vysotskaya
Rok vydání:	2004
Předmět:	Time Factors Physiology Water flow Water food and beverages Plant Transpiration Plant Science Root system Biology Plant Roots Plant Leaves chemistry.chemical_compound Agronomy Hydraulic conductivity chemistry Seedlings Shoot Genetics Poaceae Water content Abscisic acid Triticum Transpiration
Zdroj:	Plant Physiology and Biochemistry. 42:251-255
ISSN:	0981-9428
DOI:	10.1016/j.plaphy.2004.01.004
Popis:	Removal of four out of five roots did not lower transpiration and stomatal conductivity of wheat (Triticum durum Desf.) seedlings. Water content of mature expanded leaf lamina remained constant at control levels. The results suggest that the only remaining root was capable to supply the shoot with water. This was evidenced by an increase in hydraulic conductivity of the root system following partial root excision measured at low subatmospheric pressures induced by vacuum. In the absence of a hydrostatic gradient, water flow from reduced root system was initially not higher than from an intact system, but increased subsequently. ABA content was increased in roots 1 h after partial root excision, which might contribute to the increase in hydraulic conductivity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee7f3a9983ab99fbf16c444e6b1be6c0 https://doi.org/10.1016/j.plaphy.2004.01.004 Zobrazit plný text záznamu Full Text from ScienceDirect