Induction of Carbohydrate Metabolism in Relation to Leaf Blight in Barley (Hordeum vulgare)
Year: 2009
Type: article
Abstract: : Induction of carbohydrate metabolism in relation to leaf blight (Bipolaris sorokiniana) was studied in healthy and infected leaves of barley (Hordeum vulgare). Two genotypes with varying sensitivity to leaf blight viz. PL 426 (susceptible) and BL 4 (resistant) in the absence of or following infection with leaf blight at different stages (020 days after infection) were used. Both acid and neutral invertase activities increased in response to leaf blight and might be linked with defense mechanism against fungal infection. Low activities of sucrose synthase and sucrose phosphate synthase in infected leaves as compared to non infected leaves may be involved in retention of more sugars for utilization by the fungus for its own metabolic processes. The levels of total sugar, nonreducing sugar and starch were less in infected leaves as compared to non infected leaves. Irrespective of cultivar and stage of infection, activity of total amylase marginally increased with concomitant decline in starch content. Leaf blight leads to an alteration in the fluxes of carbon and represents a cost effective stress to the plant in terms of carbon production and utilization. Key words: Barley Bipolaris sorokiniana Carbohydrate metabolism Leaf blight INTRODUCTION Owing to the increase global demand for cereal-based Barley, the world’s fourth most important cereal after rain-fed situation, has extended to irrigated systems [4]. wheat, rice and maize suffers huge yield losses due to Breeding efforts and irrigation have increased cropping
Source: Tropical Agriculture
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W337306423