scholarly journals Rubisco and Rubisco Activase Play an Important Role in the Biochemical Limitations of Photosynthesis in Rice, Wheat, and Maize under High Temperature and Water Deficit

2017 ◽  
Vol 8 ◽  
Author(s):  
Juan A. Perdomo ◽  
Sebastià Capó-Bauçà ◽  
Elizabete Carmo-Silva ◽  
Jeroni Galmés
Keyword(s):  
High Temperature ◽  
Water Deficit ◽  
Rubisco Activase

scholarly journals Spring barley performances in the Pannonian zone

Genetika ◽  
2012 ◽  
Vol 44 (3) ◽  
pp. 499-512 ◽  
Author(s):  
Novo Przulj ◽  
Vojislava Momcilovic
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Genetic Variability ◽  
Plant Height ◽  
Water Deficit ◽  
Environmental Conditions ◽  
Spring Barley ◽  
Grain Filling ◽  
Growing Seasons ◽  
Grain Filling Period

Environmental conditions in the Pannonian zone can be characterized with moderate high temperature and partially water deficit during grain filling of spring barley, although low temperature and water deficit are possible also in period till anthesis. This study was conducted to evaluate the variation of the duration of the period from emergence to anthesis (VP), duration of grain filling period (GFP), plant height (PH), spikes number m-2 (SN), grains number spike-1 (GN), thousand grains weight (GW) and yield (YIL) in spring two-rowed barley in conditions of the Pannonian zone. All three factors; genotype, environment and the interaction GxY affected the studied traits. Average VP was 777 GDD, GFP 782 GDD, PH 78 cm, SN 523, GN 28.2, GW 43.2 g and YIL 6.26 t ha-1. Variation across varieties was higher than across growing seasons. Heritability varied from 0.66 for YIL to 0.94 for VP and GFP. This study confirmed that a sufficiently large genetic variability must be base for selecting appropriate varieties for the Pannonian zone conditions. In order to determine high yielding and quality barley extensive research in relation to breeding, variety choice for production and growing practice must be done.

Water-deficit and high temperature affected water use efficiency and arabinoxylan concentration in spring wheat

2010 ◽  
Vol 52 (2) ◽  
pp. 263-269 ◽  
Author(s):  
Beibei Zhang ◽  
Wenzhao Liu ◽  
Scott X. Chang ◽  
Anthony O. Anyia
Keyword(s):  
High Temperature ◽  
Water Use Efficiency ◽  
Water Deficit ◽  
Water Use ◽  
Spring Wheat ◽  
Use Efficiency

scholarly journals Physiological tolerance to drought under high temperature in soybean cultivars

2019 ◽  
pp. 976-987 ◽  
Author(s):  
Jônatas Neves de Castro ◽  
Caroline Müller ◽  
Gabriel Martins Almeida ◽  
Alan Carlos Costa
Keyword(s):  
High Temperature ◽  
Water Deficit ◽  
Electron Flow ◽  
Soluble Sugar ◽  
Water Levels ◽  
Effective Quantum Yield ◽  
Growth Responses ◽  
Ps Ii ◽  
Total Electron ◽  
Soybean Cultivars

Soybean is one of the most economically important crops and has experienced adverse physiological and biochemical effects when subjected to drought stress and heat, resulting in lost productivity. Thus, the objective of this work was to evaluate the physiological, metabolic and growth responses of well-watered and drought-treated soybean cultivars under high temperature. The experimental design was set up in randomized blocks, in a factorial scheme with three soybean cultivars (7739 M, Anta 82 and Desafio) and two water levels (100% and 40% field capacity). The experiment was conducted in a controlled growth chamber with a gradual rise in temperature at 41°C for 5 hours daily. Morpho-physiological and metabolic analyses were performed 12 days after the treatments imposition. The parameters of water and osmotic potentials, relative water content, photosynthetic rate, stomatal conductance, transpiratory rate, electron flux for the carboxylation and oxygenation of RuBisCO were decreased for all cultivars under water deficit and high temperature. The results showed that the photorespiration and the rate of electrolyte leakage were increased as well. These results showed that these physiological behaviors are standard for soybean plants under water deficit, regardless of cultivars. The cultivars 7739 M and Desafio showed lower performance than the cultivar Anta 82 for the parameters of total electron flow and effective quantum yield of PS II. The 7739 M and Anta 82 were the only cultivars to show increased non-photochemical quenching dissipation and total soluble sugar content, respectively, under stress conditions. Desafio cultivar demonstrated greater physiological and growth traits stability, which could potentially indicate double tolerance to these stresses.

Determinants of oil concentration and seed yield in canola and Indian mustard in the lower rainfall areas of Western Australia

2004 ◽  
Vol 55 (3) ◽  
pp. 367 ◽  
Author(s):  
P. Si ◽  
G. H. Walton
Keyword(s):  
High Temperature ◽  
Water Deficit ◽  
Seed Yield ◽  
Western Australia ◽  
Indian Mustard ◽  
Sowing Date ◽  
Early Flowering ◽  
High Rainfall ◽  
Percentage Points ◽  
Oil Concentration

Oil concentration and seed yield of canola (Brassica napus) are usually low and variable when grown in the lower rainfall areas of Western Australia. This paper identifies determinants of oil concentration and seed yield in these areas. Through a series of cultivar × sowing date experiments at 5 lower rainfall locations and one high rainfall location as comparison, we evaluated the impact of sowing date, cultivar, and location on these 2 key agronomic traits. We also examined relationships between oil concentration, seed yield, and post-anthesis duration, post-anthesis temperature, and post-anthesis rainfall with a view to investigate the adaptive requirements of canola for the lower rainfall areas.Cultivars differed in their capacities to produce oil and seed yield. The ranking of cultivars for oil concentration, and seed yield to a lesser extent, remained constant across sowing dates and locations. Both seed yield and oil concentration decreased with delayed sowing. On average, oil concentration was reduced by 1.1 percentage points and seed yield by 309 kg/ha for every 2 weeks delay in sowing. The magnitude of reduction in oil concentration from delayed sowing was far greater in a low rainfall site at Mullewa than in the high rainfall site at Mt Barker.Later sowings shortened post-anthesis duration. With a given sowing date, early flowering cultivars resulted in longer post-anthesis duration. Oil concentration increased by 1.2 percentage points for a 10-day increase in post-anthesis duration. Both oil concentration and seed yield increased with higher post-anthesis rainfall and lower post-anthesis temperature. The rates of increase were 0.7 percentage points for oil and 116 kg/ha for seed yield for every 10-mm increase in post-anthesis rainfall. The rates of reduction were 0.68 percentage points for oil and 289�kg/ha for seed yield for every 1�C increase in post-anthesis temperature. These relationships suggest that a combination of an early date of sowing with an early flowering cultivar would be essential for the production of high yield and high oil canola in the lower rainfall areas. Indian mustard (B. juncea) showed tolerance to high temperature and water deficit, but the low yield potential makes it uneconomical with early sowing. Further improvement in seed yield could be dependent on increased tolerance of canola to high temperature and water deficit during seed growth and development.

scholarly journals EGRINs (Environmental Gene Regulatory Influence Networks) in Rice That Function in the Response to Water Deficit, High Temperature, and Agricultural Environments

2016 ◽  
Vol 28 (10) ◽  
pp. 2365-2384 ◽  
Author(s):  
Olivia Wilkins ◽  
Christoph Hafemeister ◽  
Anne Plessis ◽  
Meisha-Marika Holloway-Phillips ◽  
Gina M. Pham ◽  
...  
Keyword(s):  
High Temperature ◽  
Water Deficit ◽  
Regulatory Influence ◽  
Gene Regulatory ◽  
Influence Networks ◽  
Response To Water

scholarly journals A role for differential Rubisco activase isoform expression in C 4 bioenergy grasses at high temperature

GCB Bioenergy ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 211-223
Author(s):  
Sang Yeol Kim ◽  
Rebecca A. Slattery ◽  
Donald R. Ort
Keyword(s):  
High Temperature ◽  
Rubisco Activase ◽  
Bioenergy Grasses ◽  
Isoform Expression

scholarly journals The effects of Rubisco activase on C4 photosynthesis and metabolism at high temperature

2007 ◽  
Vol 59 (7) ◽  
pp. 1789-1798 ◽  
Author(s):  
L. Hendrickson ◽  
R. Sharwood ◽  
M. Ludwig ◽  
S. M. Whitney ◽  
M. R. Badger ◽  
...  
Keyword(s):  
High Temperature ◽  
C4 Photosynthesis ◽  
Rubisco Activase
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