Field-grown transgenic wheat expressing the sunflower gene HaHB4 significantly outyields the wild type

GONZÁLEZ, FERNANDA GABRIELA; CAPELLA, MATÍAS; RIBICHICH, KARINA FABIANA; CURÍN, FACUNDO; GIACOMELLI, JORGE IGNACIO; AYALA, FRANCISCO; WATSON, GERÓNIMO; OTEGUI, MARÍA ELENA; CHAN, RAQUEL LÍA

JOURNAL OF EXPERIMENTAL BOTANY

OXFORD UNIV PRESS

Lugar: Oxford; Año: 2019 vol. 70 p. 1669 - 1681

0022-0957

HaHB4 is a sunflower transcription factor belonging to the homeodomain-leucine zipper I  family whose ectopicexpression in Arabidopsis triggers drought tolerance. The use of PCR to clone the HaHB4 coding sequence forwheat transformation caused unprogrammed mutations producing subtle differences in its activation ability in yeast.Transgenic wheat plants carrying a mutated version of HaHB4 were tested in 37 field experiments. A selected transgenicline yielded 6% more (P