Claim · model-written summary
Transgenic plants under reduced watering showed induction of photorespiration.
- Taxon
- crop plantst0
- Material
- Transgenic plantse6
- Treatment
- reduced wateringe6
- Outcome
- induction of photorespiratione6
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValueQualifier
Verbatim
t0“Delayed leaf senescence induces extreme drought tolerance in crop plants”
e6“Transgenic plants grown under reduced watering also displayed the induction of photorespiration observed under severe drought conditions”
Title
Delayed leaf senescence induces extreme drought tolerance in crop plants
Rosa M. Rivero; Zvi Peleg; Mark W. Szczerba; et al. eScholarship (California Digital Library) 2009
Other claims from this paper (12)
- Intervention effect Suppressing drought-induced leaf senescence gave outstanding drought tolerance, with transgenic plants growing vigorously after a long drought that killed control plants.
- Observation Transgenic pSARK-IPT plants maintained high water contents during drought.
- Observation Transgenic pSARK-IPT plants retained photosynthetic activity during drought, at a reduced level.
- Intervention effect Drought severely affected RuBP regeneration and triose phosphate use in wild-type plants but not in transgenic plants.
- Mechanism Enhanced photorespiration in pSARK-IPT transgenic plants may lead to CO2 fixation under drought.
- Intervention effect Transgenic plants under reduced watering (30% of control water) showed minimal yield loss.
- Observation Array analysis showed major expression level differences between tolerant and wild-type plants for chloroplast photosynthesis genes.
- Observation Key PSII, PSI and ATPase complex genes were strongly repressed in stressed wild-type plants.
- Observation Key PSII, PSI and ATPase complex genes were unaffected or marginally repressed in stressed pSARK::IPT plants.
- Observation Transcript abundance of oxidative stress tolerance and photo-protection genes was higher in pSARK::IPT than in wild-type plants.
- Observation At protein level, D1, Cyt b6 and alpha-ATPase were strongly repressed only in stressed wild-type plants.
- Recommendation Drought-tolerant crops able to grow under restricted water without yield loss would minimise drought-related losses.