ArticleJournal of experimental botany2018
Physiological performance of transplastomic tobacco plants overexpressing aquaporin AQP1 in chloroplast membranes.
Article in Journal of experimental botany, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 14 citations in OpenAlex.
- Characterization and Computational Engineering of Structural Elements Controlling Gas Permeability in PIP2;1 Aquaporins.Journal of computational chemistry · 2026Article
- Effects of exogenous SLs on growth and physiological characteristics of flue-cured tobacco seedlings under different degrees of drought stress.Frontiers in plant science · 2024Article
- Salicylic Acid Improves Antioxidant Defense System and Photosynthetic Performance inPlants (Basel, Switzerland) · 2022Article
- Expression of a COeLife · 2021Article
- Native and non-native host assessment towards metabolic pathway reconstructions of plant natural products.Biotechnology reports (Amsterdam, Netherlands) · 2021Review
- Lycopene β-cyclase expression influences plant physiology, development, and metabolism in tobacco plants.Journal of experimental botany · 2021Article
- Plastid Transformation: How Does it Work? Can it Be Applied to Crops? What Can it Offer?International journal of molecular sciences · 2020Review
- Photosynthetic Metabolism under Stressful Growth Conditions as a Bases for Crop Breeding and Yield Improvement.Plants (Basel, Switzerland) · 2020Review
- Overexpression of thioredoxin m in tobacco chloroplasts inhibits the protein kinase STN7 and alters photosynthetic performance.Journal of experimental botany · 2019Article
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The leaf mesophyll CO2 conductance and the concentration of CO2 within the chloroplast are major factors affecting photosynthetic performance. Previous studies have shown that the aquaporin NtAQP1 (which localizes to the plasma membrane and chloroplast inner envelope membrane) is involved in CO2 permeability in the chloroplast. Levels of NtAQP1 in plants genetically engineered to overexpress the protein correlated positively with leaf mesophyll CO2 conductance and photosynthetic rate. In these studies, the nuclear transformation method used led to changes in NtAQP1 levels in the plasma membrane and the chloroplast inner envelope membrane. In the present work, NtAQP1 levels were increased up to 16-fold in the chloroplast membranes alone by the overexpression of NtAQP1 from the plastid genome. Despite the high NtAQP1 levels achieved, transplastomic plants showed lower photosynthetic rates than wild-type plants. This result was associated with lower Rubisco maximum carboxylation rate and ribulose 1,5-bisphosphate regeneration. Transplastomic plants showed reduced mesophyll CO2 conductance but no changes in chloroplast CO2 concentration. The absence of differences in chloroplast CO2 concentration was associated with the lower CO2 fixation activity of the transplastomic plants. These findings suggest that non-functional pores of recombinant NtAQP1 may be produced in the chloroplast inner envelope membrane.
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