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Title: Insight. Transgenic solutions to increase yield and stability in wheat: shining hope or flash in the pan?
Author: Araus Ortega, José Luis
Serret Molins, M. Dolors
Lopes, Marta S.
Keywords: Plantes transgèniques
Blat de moro
Revolució verda
Transgenic plants
Green revolution
Issue Date: 11-Mar-2019
Publisher: Oxford University Press
Abstract: Second-generation transgenic crops have the potential to transform agriculture, but progress has been limited, and particularly so in wheat where no transgenic cultivar has yet been approved. Taking on the challenge, González et al. (2019) report that transgenic wheat lines carrying a mutated version of the sunflower transcription factor (HaHB4), belonging to the homeodomain-leucine zipper family (HD-Zip I), had increased yield and water use efficiency across a range of environments, with particular benefits under stress. It is an important step forward in an area where progress is urgently needed, though it is too early to claim that transgenic wheat will form the backbone of a second Green Revolution. To meet the growing demand for food, together with the challenges imposed by climate change, substantial improvements in yields of major crops are needed. This includes wheat, where globally the multi-year tendency for growth in yield is decreasing (Passioura, 2012) or even stagnating (Driever et al., 2017). Current and expected future relative rates of progress in yield potential and drought adaptation in wheat are a matter of real concern, and insufficient to meet the projected demand for cereals by 2050 (Hall and Richards, 2013). There are three major challenges: increasing yield potential, protecting yield potential from different types of stress, and increasing resource use efficiency to ensure sustainability (Hawkesford et al., 2013).
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It is part of: Journal of Experimental Botany, 2019, vol. 70, num. 5, p. 1419-1424
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ISSN: 0022-0957
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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