TY  - JOUR
AU  - Sakowska, Karolina
AU  - Alberti, Giorgio
AU  - Genesio, Lorenzo
AU  - Peressotti, Alessandro
AU  - Delle Vedove, Gemini
AU  - Gianelle, Damiano
AU  - Colombo, Roberto
AU  - Rodeghiero, Mirco
AU  - Panigada, Cinzia
AU  - Juszczak, Radosław
AU  - Celesti, Marco
AU  - Rossini, Micol
AU  - Haworth, Matthew
AU  - Campbell, Benjamin W.
AU  - Mevy, Jean-Philippe
AU  - Vescovo, Loris
AU  - Cendrero-Mateo, M. Pilar
AU  - Rascher, Uwe
AU  - Miglietta, Franco
TI  - Leaf and canopy photosynthesis of a chlorophyll deficient soybean mutant
JO  - Plant, cell & environment
VL  - 41
IS  - 6
SN  - 0140-7791
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - FZJ-2018-02880
SP  - 1427-1437
PY  - 2018
AB  - The photosynthetic, optical, and morphological characteristics of a chlorophyll‐deficient (Chl‐deficient) “yellow” soybean mutant (MinnGold) were examined in comparison with 2 green varieties (MN0095 and Eiko). Despite the large difference in Chl content, similar leaf photosynthesis rates were maintained in the Chl‐deficient mutant by offsetting the reduced absorption of red photons by a small increase in photochemical efficiency and lower non‐photochemical quenching. When grown in the field, at full canopy cover, the mutants reflected a significantly larger proportion of incoming shortwave radiation, but the total canopy light absorption was only slightly reduced, most likely due to a deeper penetration of light into the canopy space. As a consequence, canopy‐scale gross primary production and ecosystem respiration were comparable between the Chl‐deficient mutant and the green variety. However, total biomass production was lower in the mutant, which indicates that processes other than steady state photosynthesis caused a reduction in biomass accumulation over time. Analysis of non‐photochemical quenching relaxation and gas exchange in Chl‐deficient and green leaves after transitions from high to low light conditions suggested that dynamic photosynthesis might be responsible for the reduced biomass production in the Chl‐deficient mutant under field conditions.
LB  - PUB:(DE-HGF)16
C6  - pmid:29498070
UR  - <Go to ISI:>//WOS:000434162400017
DO  - DOI:10.1111/pce.13180
UR  - https://juser.fz-juelich.de/record/845667
ER  -