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@ARTICLE{Chiewchankaset:907136,
author = {Chiewchankaset, Porntip and Thaiprasit, Jittrawan and
Kalapanulak, Saowalak and Wojciechowski, Tobias and
Boonjing, Patwira and Saithong, Treenut},
title = {{E}ffective {M}etabolic {C}arbon {U}tilization and
{S}hoot-to-{R}oot {P}artitioning {M}odulate {D}istinctive
{Y}ield in {H}igh {Y}ielding {C}assava {V}ariety},
journal = {Frontiers in plant science},
volume = {13},
issn = {1664-462X},
address = {Lausanne},
publisher = {Frontiers Media},
reportid = {FZJ-2022-01861},
pages = {832304},
year = {2022},
abstract = {Increasing cassava production could mitigate one of the
global food insecurity challenges by providing a sustainable
food source. To improve the yield potential, physiological
strategies (i.e., the photosynthetic efficiency,
source-to-sink carbon partitioning, and intracellular carbon
metabolism) can be applied in breeding to screen for
superior genotypes. However, the influences of
source-to-sink carbon partitioning and carbon metabolism on
the storage root development of cassava are relatively
little understood. We hypothesized that carbon partitioning
and utilization vary modulating the distinctive storage root
yields of high and low-yielding cassava varieties,
represented in this study by varieties Kasetsart 50 (KU50)
and Hanatee (HN), respectively. Plant growth, photosynthesis
measurements, soluble sugars, and starch contents of
individual tissues were analyzed at different developmental
stages. Also, the diurnal patterns of starch accumulation
and degradation in leaves were investigated through iodine
staining. Despite a comparable photosynthetic rate, KU50
grew better and yielded greater storage roots than HN.
Interestingly, both varieties differed in their carbon
partitioning strategies. KU50 had a high photosynthetic
capacity and was better efficient in converting
photoassimilates to carbon substrates and allocating them to
sink organs for their growth. In contrast, HN utilized the
photoassimilates at a high metabolic cost, in terms of
respiration, and inefficiently allocated carbon to stems
rather than storage roots. These results highlighted that
carbon assimilation and allocation are genetic potential
characteristics of individual varieties, which in effect
determine plant growth and storage root yield of cassava.
The knowledge gained from this study sheds light on
potential strategies for developing new high-yielding
genotypes in cassava breeding programs.},
cin = {IBG-2},
ddc = {570},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217)},
pid = {G:(DE-HGF)POF4-2171},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:35251103},
UT = {WOS:000770923700001},
doi = {10.3389/fpls.2022.832304},
url = {https://juser.fz-juelich.de/record/907136},
}