Day-length effects on protein localisation affect water absorption in barley (Hordeum vulgare) grains

A - Papers appearing in refereed journals

Holopainen, U. R. M., Wilhelmson, A., Home, S., Poutanen, K. and Shewry, P. R. 2012. Day-length effects on protein localisation affect water absorption in barley (Hordeum vulgare) grains. Journal of the Science of Food and Agriculture. 92 (15), pp. 2944-2951.

AuthorsHolopainen, U. R. M., Wilhelmson, A., Home, S., Poutanen, K. and Shewry, P. R.
Abstract

BACKGROUND: Hordeins are major storage proteins of barley (Hordeum vulgare L.) grains and are considered to influence malting and brewing by forming a matrix surrounding the starch granules which affects the release of fermentable sugars. However, the extent to which environmental factors affect hordein location, and the impact of this on malting performance, have not so far been studied. Therefore the relationship of hordein location to water uptake and malting quality were studied by growing barley cv. Barke under different daylengths (14 h and 18 h of light) in controlled environment conditions. RESULTS: Differences in the locations of hordein storage proteins were observed, with C hordein being located more deeply within the endosperm of both developing grains at 35 days after anthesis and in mature grains under long-day conditions. This deeper location of C hordein was correlated positively with water uptake during the steeping phase of malting. CONCLUSION: An effect of environment (daylength) on the localisation of C hordein was demonstrated. This difference in hordein localisation was also associated with differences in malting quality with water uptake in the steeping phase being associated positively with the deeper location of C hordein. These results indicate that environmental effects on protein location may affect malting performance of barley grains. Copyright (c) 2012 Society of Chemical Industry

KeywordsAgriculture, Multidisciplinary; Chemistry, Applied; Food Science & Technology
Year of Publication2012
JournalJournal of the Science of Food and Agriculture
Journal citation92 (15), pp. 2944-2951
Digital Object Identifier (DOI)doi:10.1002/jsfa.5706
PubMed ID22549917
Open accessPublished as non-open access
FunderFoundation of Professor T.-M. Enari
Agricultural Research Foundation of August Johannes and Aino Tiura
Finnish Food and Drink Industries' Federation
Academy of Finland
Biotechnology and Biological Sciences Research Council
Funder project or codeCentre for Crop Genetic Improvement (CGI)
ISSN00225142
0022-5142
PublisherWiley

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