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@ARTICLE{Gioia:201957,
author = {Gioia, T. and Nagel, Kerstin and Beleggia, R. and Fragasso,
M. and Ficco, D. B. M. and Pieruschka, R. and De Vita, P.
and Fiorani, F. and Papa, R.},
title = {{I}mpact of domestication on the phenotypic architecture of
durum wheat under contrasting nitrogen fertilization},
journal = {The journal of experimental botany},
volume = {66},
number = {18},
issn = {0022-0957},
address = {Oxford},
publisher = {Univ. Press},
reportid = {FZJ-2015-04247},
pages = {5519-5530},
year = {2015},
abstract = {The process of domestication has led to dramatic
morphological and physiological changes in crop species due
toadaptation to cultivation and to the needs of farmers. To
investigate the phenotypic architecture of shoot- and
rootrelatedtraits and quantify the impact of primary and
secondary domestication, we examined a collection of 36
wheatgenotypes under optimal and nitrogen-starvation
conditions. These represented three taxa that correspond to
key stepsin the recent evolution of tetraploid wheat (i.e.
wild emmer, emmer, and durum wheat). Overall, nitrogen
starvationreduced the shoot growth of all genotypes, while
it induced the opposite effect on root traits, quantified
using theautomated phenotyping platform GROWSCREEN-Rhizo. We
observed an overall increase in all of the shoot and
rootgrowth traits from wild emmer to durum wheat, while
emmer was generally very similar to wild emmer but
intermediatebetween these two subspecies. While the
differences in phenotypic diversity due to the effects of
primary domesticationwere not significant, the secondary
domestication transition from emmer to durum wheat was
marked by a large andsignificant decrease in the coefficient
of additive genetic variation. In particular, this reduction
was very strong underthe optimal condition and less intense
under nitrogen starvation. Moreover, although under the
optimal condition bothroot and shoot traits showed
significantly reduced diversity due to secondary
domestication, under nitrogen starvationthe reduced
diversity was significant only for shoot traits. Overall, a
considerable amount of phenotypic variation wasobserved in
wild emmer and emmer, which could be exploited for the
development of pre-breeding strategies.},
cin = {IBG-2},
ddc = {580},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582) / EPPN - European Plant
Phenotyping Network (284443)},
pid = {G:(DE-HGF)POF3-582 / G:(EU-Grant)284443},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000361208000012},
pubmed = {pmid:26071535},
doi = {10.1093/jxb/erv289},
url = {https://juser.fz-juelich.de/record/201957},
}