Does excess boron affect hormone levels of potato cultivars?

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Ayvaz , M , Guven , A & Fagerstedt , K V 2015 , ' Does excess boron affect hormone levels of potato cultivars? ' , Biotechnology and Biotechnological Equipment , vol. 29 , no. 5 , pp. 887-891 .

Title: Does excess boron affect hormone levels of potato cultivars?
Author: Ayvaz, Muavviz; Guven, Avni; Fagerstedt, Kurt Valter
Contributor organization: Biosciences
Oxygen stress tolerance and lignin biosynthesis group
Plant Biology
Viikki Plant Science Centre (ViPS)
Date: 2015
Language: eng
Number of pages: 5
Belongs to series: Biotechnology and Biotechnological Equipment
ISSN: 1310-2818
Abstract: Potato crop production in Turkey ranks on the thirteenth place in the world. Toxicity is a problematic issue for some parts of the Turkish soils. Hence, it is very important to clarify the physiological responses of plants to toxic mineral stress. In this study, two different potato cultivars - Solanum tuberosum cv. Resy and Solanum tuberosum cv. Agria - were used as a study material. Excess boron was applied in two different concentrations (5 mmol/L and 12.5 mmol/L) 32 days after planting the tubers. Plants were harvested at the end of 15 days of excess boron application. Chlorophyll fluorescence (Fv/Fm) was measured. Shoot height and shoot-root fresh weight contents were determined. Analyses were carried out for the contents of the endogenous hormones indole-3-acetic acid (IAA) and abscisic acid (ABA) by using gas chromatography-mass spectrophotometry (GS-MS). According to the obtained data, plants' shoot height did not change, whereas the shoot's fresh weight decreased significantly with increasing of the boron concentrations in cv Resy, by applying 12.5 mmol/L boron. With 12.5 mmol/L boron, the photosynthesis was negatively affected in both cultivars. Boron application led to increased endogenous IAA and ABA content in both cultivars. As a result, cv. Resy showed more resistance to excess boron. Findings on the hormone metabolism and chlorophyll fluorescence in different cultivars will shed a light on understanding the physiological response to excess mineral stress.
Subject: 1183 Plant biology, microbiology, virology
414 Agricultural biotechnology
boron toxicity
Solanum tuberosum L
chlorophyll fluorescence
Peer reviewed: Yes
Rights: unspecified
Usage restriction: openAccess
Self-archived version: publishedVersion

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