| 000 | 02957nam a22003257a 4500 | ||
|---|---|---|---|
| 003 | ZW-GwMSU | ||
| 005 | 20250220075421.0 | ||
| 008 | 250220b |||||||| |||| 00| 0 eng d | ||
| 022 | _a0176-1617 | ||
| 040 |
_aMSU _bEnglish _cMSU _erda |
||
| 050 | 0 | 0 | _aQK711.2 JOU |
| 100 | 1 |
_aMajláth, Imre _eauthor |
|
| 245 | 1 | 0 |
_aReduced light and moderate water deficiency sustain nitrogen assimilation and sucrose degradation at low temperature in durum wheat _ccreated by Imre Majláth, Eva Darko, Balázs Palla, Zoltán Nagy, Tibor Janda and Gabriella Szalai |
| 264 | 1 |
_aAmsterdam: _bElsevier GmbH, _c2016. |
|
| 336 |
_2rdacontent _atext _btxt |
||
| 337 |
_2rdamedia _aunmediated _bn |
||
| 338 |
_2rdacarrier _avolume _bnc |
||
| 440 |
_aJournal of plant physiology _vVolume 191 |
||
| 520 | 3 | _aThe rate of carbon and nitrogen assimilation is highly sensitive to stress factors, such as low temperature and drought. Little is known about the role of light in the simultaneous effect of cold and drought. The present study thus focused on the combined effect of mild water deficiency and different light intensities during the early cold hardening in durum wheat (Triticum turgidum ssp. durum L.) cultivars with different levels of cold sensitivity. The results showed that reduced illumination decreased the undesirable effects of photoinhibition in the case of net photosynthesis and nitrate reduction, which may help to sustain these processes at low temperature. Mild water deficiency also had a slight positive effect on the effective quantum efficiency of PSII and the nitrate reductase activity in the cold. Glutamine synthesis was affected by light rather than by water deprivation during cold stress. The invertase activity increased to a greater extent by water deprivation, but an increase in illumination also had a facilitating effect on this enzyme. This suggests that both moderate water deficiency and light have an influence on nitrogen metabolism and sucrose degradation during cold hardening. A possible rise in the soluble sugar content caused by the invertase may compensate for the decline in photosynthetic carbon assimilation indicated by the decrease in net photosynthesis. The changes in the osmotic potential can be also correlated to the enhanced level of invertase activity. Both of them were regulated by light at normal water supply, but not at water deprivation in the cold. However, changes in the metabolic enzyme activities and osmotic adjustment could not be directly contributed to the different levels of cold tolerance of the cultivars in the early acclimation period. | |
| 650 | _aCold | ||
| 650 | _aDrought | ||
| 650 | _aDurum wheat | ||
| 700 | 1 |
_aDarko, Eva _eco-author |
|
| 700 | 1 |
_aPalla, Balázs _eco-author |
|
| 700 | 1 |
_aNagy, Zoltán _eco-author |
|
| 700 | 1 |
_aJanda, Tibor _eco-author |
|
| 700 | 1 |
_aSzalai, Gabriella _eco-author |
|
| 856 | _uhttps://doi.org/10.1016/j.jplph.2015.12.004 | ||
| 942 |
_2lcc _cJA |
||
| 999 |
_c169007 _d169007 |
||