NDLI: Variation of invertase activities in four wheat cultivars as influenced by thiourea and high temperature

Content Provider	Springer Nature Link
Author	Asthir, Bavita Kaur, Ravneet Bains, Navtej Singh
Copyright Year	2014
Abstract	The effects of metal ions and thiourea on the activities of invertases in relation to the accumulation of free sugars and soluble protein were studied in four germinating wheat (Triticum aestivum) cultivars PBW 343, PBW 534 (heat susceptible), C 306 and C 273 (heat tolerant) under normal (25 °C) and high temperature (HT, 32 °C) conditions. High temperature significantly increased the activities of soluble acid, neutral and cell wall-bound invertases in correspondence with an increase in reducing sugar and soluble protein whereas the content of non reducing sugar was decreased in both root and shoot. Thiourea application under HT stress further elevated invertase activities and soluble protein content in all the four cultivars studied. Invertase activities of C 306 and C 273 cultivars were more sensitive to sulfhydryl group modifiers whereas the inhibitory effect of Ca$^{2+}$, Hg$^{2+}$, Mg$^{2+}$ and Zn$^{2+}$ was much more pronounced in PBW 343 and PBW 534. Apparently, inhibitory effect of iodine and Hg$^{2+}$ on invertase activities in root and shoot of wheat confirmed the presence of sulfhydryl group at the active site of the enzyme. The results indicate that differential response of wheat cultivars may be anticipated to in vitro modulation of invertases to metal ions and TU that leads to selective modification of carbon metabolism under the influence of HT.
Starting Page	1
Ending Page	9
Page Count	9
File Format	PDF
ISSN	01375881
Journal	Acta Physiologiae Plantarum
Volume Number	37
Issue Number	1
e-ISSN	18611664
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-11-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metal ions Non reducing sugars Reducing sugars Soluble protein Sugars Sulfhydryl modifiers Plant Physiology Plant Genetics & Genomics Plant Biochemistry Plant Pathology Plant Anatomy/Development Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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