Photosynthetica - Ahead of Print
Chlorophyll retention caused by STAY-GREEN (SGR) gene mutation enhances photosynthetic efficiency and yield in soybean hybrid Z1
P. WANG, S.Y. HOU, H.W. WEN, Q.Z. WANG, G.Q. LI
Photosynthetica X:X | DOI: 10.32615/ps.2020.076
Chlorophyll (Chl) degradation is generally considered as the most obvious characteristic of leaf senescence, which results in leaf yellowing and decreased photosynthetic efficiency. Normally, Chl interacts with pigment-binding proteins of thylakoid membranes to form protein complexes, because free Chl is phototoxic. Once dissociated from the protein complex, it must be degraded as soon as possible (Pružinská et al. 2007). Chl is eventually converted to colorless breakdown products in a multi-step catabolic pathway by Chl catabolic enzymes (CCEs) (Sakuraba et al. 2014).
The quantitative proteomic analysis provides insight into the effects of drought stress in maize
H.-J. LI, Y.-F. WANG, C.-F. ZHAO, M. YANG, G.-X. WANG, R.-H. ZHANG
Photosynthetica X:X | DOI: 10.32615/ps.2020.078
Drought stress is one of the detrimental environmental factors that limit plant productivity in agriculture (Zhu 2016). Plant sensitivity to drought is a complex phenomenon and depends on numerous factors, such as the growth stage of the plant, duration, and severity of stress (Zhu 2002). How plants adapt to adverse environments is a fundamental biological question. Accumulating knowledge shows that plants have evolved complex physiological and molecular mechanisms to respond to drought (Zhou et al. 2015, Habibi 2018). Under the condition of water deficiency, plants respond to drought stress by controlling leaf rolling, stomatal aperture, and...
Performing gas-exchange measurements on excised branches - evaluation and recommendations
J.E.C. MISSIK, A.C. OISHI, M.C. BENSON, V.J. MERETSKY, R.P. PHILLIPS, K.A. NOVICK
Photosynthetica X:X | DOI: 10.32615/ps.2020.079
Ecosystem carbon uptake and water loss through transpira- tion are regulated through leaf-level processes, including stomatal conductance (gs) and the net rate of photosynthetic CO2 assimilation (PN). Over the past several decades, technological advances in portable leaf gas-exchange analyzers have enabled widespread, in situ measurements of these processes, spanning ecosystem types and local biophysical variability. These data are used to explore how species-specific carbon uptake and water use respond to variable meteorological and stand conditions and are instrumental for testing new theories...
In honor of Hartmut Karl Lichtenthaler
G. GOVINDJEE
Photosynthetica X:X | DOI: 10.32615/ps.2020.080
We honor here Hartmut Karl Lichtenthaler, a pioneer of plant physiology, plant biochemistry, plant biophysics, plant molecular biology, and stress physiology. His contributions to the ingenious use of chlorophyll a fluorescence imaging in understanding the physiological processes in leaves stand out. We wish him many happy and productive years of research and educating others.
Light quality-dependent regulation of photoprotection and antioxidant properties in rice seedlings grown under different light-emitting diodes
L.H. TRAN, D.G. LEE, S. JUNG
Photosynthetica X:X | DOI: 10.32615/ps.2020.082
Light is not only an essential energy source for plants but also an important signal influencing plant development (Wu et al. 2007, Tran and Jung 2017, Yu et al. 2017). When more light is absorbed than utilized for photosynthesis, the excess excitation energy should be dissipated otherwise it is passed to molecular oxygen and reactive oxygen species (ROS) are generated. Therefore, photosynthesis could not exist without efficient photoprotective mechanisms against potential damage induced by unutilized light energy (Demmig-Adams et al. 2012, Wang et al. 2018). Excitation energy in excess can be removed by de-excitation of excited...
Transcriptome sequence and physiological analysis revealed the roles of carotenoids and photosynthesis under low temperature combined with low-light stress on pepper (Capsicum annuum L.)
J. LI, J.M. XIE, J.H. YU, J. LYV, E.P. BAKPA, X.D. ZHANG, J. ZHANG, C.N. TANG, D.X DING, N.H. LI, F. GAO, C. WANG
Photosynthetica X:X | DOI: 10.32615/ps.2020.083
Plants are continuously exposed to various environmental stresses throughout their growth. Abiotic stresses, such as drought, heat, chilling, salinity, high light, low light, and nutrient stresses, affect plants growth and yield (Zhao et al. 2013, Campany et al. 2016, Pedersen et al. 2016, Tricker et al. 2016, Truffault et al. 2016, Abdelaal et al. 2018, 2020a; Kirilovsky and Büchel 2019, Hafez et al. 2020, Zhuang et al. 2019). Temperature and light are often correlated (Legris et al. 2017) and low temperature combined with low light (LL) is a widespread environmental stress factor that adversely...
Stomatal, mesophyll and biochemical limitations to soil drought and rewatering in relation to intrinsic water-use efficiency in Manchurian ash and Mongolian oak
K. ZHU, F.H. YUAN, A.Z. WANG, J.B. WU, D.X. GUAN, C.J. JIN, J. FLEXAS, C.J. GONG, H.X. ZHANG, Y.S ZHANG
Photosynthetica X:X | DOI: 10.32615/ps.2020.084
● Both stomatal limitation (lsc) and mesophyll limitation (lm) increased with water stress, while biochemical limitation (lb) decreased ● During recovery, lsc and lm decreased, while lb increased ● Photosynthesis limitations directly influenced WUEi
In memory of George Papageorgiou, the father of biophysics of photosynthesis in Greece
M. TSIMILLI-MICHAEL
Photosynthetica X:X | DOI: 10.32615/ps.2021.001
Dr. George Papageorgiou, former Research Director of the Laboratory of Membrane Biophysics and Biotechnology at the National Centre for Scientific Research ‘Demokritos’, Athens, Greece, passed away on November 21, 2020.
Photosynthetic activity of Triticum dicoccum × Triticum aestivum alloplasmic lines during vegetation in connection with productivity traits under varying moister conditions
N.V. TERLETSKAYA, V.YU. STUPKO, N.A. ALTAYEVA, N.O. KUDRINA, I.V. BLAVACHINSKAYA, M.S. KURMANBAYEVA, U. EREZHETOVA
Photosynthetica X:X | DOI: 10.32615/ps.2021.003
● PSII quantum yields at early vegetation stages can predict the fertility of wheat ● Rapid light curves appeared to be productivity potential indicators ● Allolines of T. dicoccum × T. aestivum are perspective for drought tolerance induction
Exogenous salicylic acid ameliorates waterlogging stress damages and improves photosynthetic efficiency and antioxidative defense system in waxy corn
J. WANG, S.H. SHI, D.Y. WANG, Y. SUN, M. ZHU, F.H. LI
Photosynthetica X:X
Waterlogging stress is described as the saturation of soil with water around the crop roots, which is one of the major abiotic factors limiting plant growth, development, and crop yield (Ren et al. 2017, Tian et al. 2019, Panozzo et al. 2019). Waterlogging stress has become a severe problem affecting crop growth and yield worldwide because of the increasing frequency of excessive rainfall, especially at the lack of soil drainage and irregular topography areas (Dar et al. 2018, Zhang et al. 2019a). An estimated 16% of the fertile areas of the globe annually undergo waterlogging stress (Xu et al....