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Yamane, Yoshihiro; Kashino, Yasuhiro; Koike, Hiroyuki; Satoh, Kazuhiko

doi:10.1023/a:1005884717655

Cited by 229 publications

(30 citation statements)

References 25 publications

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“…We observed a significant increase of the F 0 , especially when seedlings were grown under high temperatures. Such an increase has been observed previously in other crops [31, 32], and it has been associated to a dissociation of part of the outer antenna from the rest of the PSII [33] or to a shift in the equilibrium between the electron acceptors Q A and Q B which enhance back electron transfer from Q B to Q A [31, 34]. In this later scenario, Q A will remain partially reduced in darkness and the O-step no longer represents the F 0 .…”

Section: Resultssupporting

confidence: 86%

Effect of temperature stress on the early vegetative development of Brassica oleracea L.

et al. 2015

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BackgroundDue to its biennual life cycle Brassica oleracea is especially exposed to seasonal changes in temperature that could limit its growth and fitness. Thermal stress could limit plant growth, leaf development and photosynthesis. We evaluated the performance of two local populations of B. oleracea: one population of cabbage (B. oleracea capitata group) and one population of kale (B. oleracea acephala group) under limiting low and high temperatures.ResultsThere were differences between crops and how they responded to high and low temperature stress. Low temperatures especially affect photosynthesis and fresh weight. Stomatal conductance and the leaf water content were dramatically reduced and plants produce smaller and thicker leaves. Under high temperatures there was a reduction of the weight that could be associated to a general impairment of the photosynthetic activity.ConclusionsAlthough high temperatures significantly reduced the dry weight of seedlings, in general terms, low temperature had a higher impact in B. oleracea physiology than high temperature. Interestingly, our results suggest that the capitata population is less sensitive to changes in air temperature than the acephala population.Electronic supplementary materialThe online version of this article (doi:10.1186/s12870-015-0535-0) contains supplementary material, which is available to authorized users.

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Section: Resultssupporting

confidence: 86%

Effect of temperature stress on the early vegetative development of Brassica oleracea L.

et al. 2015

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“…The drastic decrease in Fv/Fm, epoxidation state, and Chl a/Chl b ratio for the 0.32-max culture compared to the 0.97-max and the P-replete cultures is in agreement with the necessity to dissipate excess energy for the cells under this treatment. The negative relationship between the Fv/Fm ratio and the degree of P limitation was mainly caused by an increase in cellular F0, as standardized to Chl a, which implies damage or inactivation of photosystem II (58). The higher RFL, independent of Chl a content, for the 0.32-max treatment confirms this.…”

Section: Discussionmentioning

confidence: 52%

Elevated CO ₂ and Phosphate Limitation Favor Micromonas pusilla through Stimulated Growth and Reduced Viral Impact

Maat

Crawfurd

Timmermans

et al. 2014

Appl Environ Microbiol

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bGrowth and viral infection of the marine picoeukaryote Micromonas pusilla was studied under a future-ocean scenario of elevated partial CO 2 (pCO 2 ; 750 atm versus the present-day 370 atm) and simultaneous limitation of phosphorus (P). Independent of the pCO 2 level, the ratios of M. pusilla cellular carbon (C) to nitrogen (N), C:P and N:P, increased with increasing P stress. Furthermore, in the P-limited chemostats at growth rates of 0.32 and 0.97 of the maximum growth rate ( max ), the supply of elevated pCO 2 led to an additional rise in cellular C:N and C:P ratios, as well as a 1.4-fold increase in M. pusilla abundance. Viral lysis was not affected by pCO 2 , but P limitation led to a 150% prolongation of the latent period (6 to 12 h) and an 80% reduction in viral burst sizes (63 viruses per cell) compared to P-replete conditions (4 to 8 h latent period and burst size of 320). Growth at 0.32 max further prolonged the latent period by another 150% (12 to 18 h). Thus, enhanced P stress due to climate change-induced strengthened vertical stratification can be expected to lead to reduced and delayed virus production in picoeukaryotes. This effect is tempered, but likely not counteracted, by the increase in cell abundance under elevated pCO 2 . Although the influence of potential P-limitation-relieving factors, such as the uptake of organic P and P utilization during infection, is unclear, our current results suggest that when P limitation prevails in future oceans, picoeukaryotes and grazing will be favored over larger-sized phytoplankton and viral lysis, with increased matter and nutrient flow to higher trophic levels.

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“…Guo et al (2005) found that lower A under heat stress was due to reduction in leaf chlorophyll contents. Damage to electron transport chain especially at photosynthesis II or inhibition of CO 2 fixation under heat stress may also disturb photosynthesis which is the key process for photo-assimilate production (Havaux and Tardy, 1996; Yamane et al, 1997). …”

Section: Discussionmentioning

confidence: 99%

Exogenously Applied Plant Growth Regulators Enhance the Morpho-Physiological Growth and Yield of Rice under High Temperature

et al. 2016

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A 2-year experiment was conducted to ascertain the effects of exogenously applied plant growth regulators (PGR) on rice growth and yield attributes under high day (HDT) and high night temperature (HNT). Two rice cultivars (IR-64 and Huanghuazhan) were subjected to temperature treatments in controlled growth chambers and four different combinations of ascorbic acid (Vc), alpha-tocopherol (Ve), brassinosteroids (Br), methyl jasmonates (MeJA), and triazoles (Tr) were applied. High temperature severely affected rice morphology, and also reduced leaf area, above-, and below-ground biomass, photosynthesis, and water use efficiency, while increased the leaf water potential of both rice cultivars. Grain yield and its related attributes except number of panicles, were reduced under high temperature. The HDT posed more negative effects on rice physiological attributes, while HNT was more detrimental for grain formation and yield. The Huanghuazhan performed better than IR-64 under high temperature stress with better growth and higher grain yield. Exogenous application of PGRs was helpful in alleviating the adverse effects of high temperature. Among PGR combinations, the Vc+Ve+MejA+Br was the most effective treatment for both cultivars under high temperature stress. The highest grain production by Vc+Ve+MejA+Br treated plants was due to enhanced photosynthesis, spikelet fertility and grain filling, which compensated the adversities of high temperature stress. Taken together, these results will be of worth for further understanding the adaptation and survival mechanisms of rice to high temperature and will assist in developing heat-resistant rice germplasm in future.

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Untitled

Cited by 229 publications

References 25 publications

Effect of temperature stress on the early vegetative development of Brassica oleracea L.

Effect of temperature stress on the early vegetative development of Brassica oleracea L.

Elevated CO ₂ and Phosphate Limitation Favor Micromonas pusilla through Stimulated Growth and Reduced Viral Impact

Exogenously Applied Plant Growth Regulators Enhance the Morpho-Physiological Growth and Yield of Rice under High Temperature

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Untitled

Cited by 229 publications

References 25 publications

Effect of temperature stress on the early vegetative development of Brassica oleracea L.

Effect of temperature stress on the early vegetative development of Brassica oleracea L.

Elevated CO 2 and Phosphate Limitation Favor Micromonas pusilla through Stimulated Growth and Reduced Viral Impact

Exogenously Applied Plant Growth Regulators Enhance the Morpho-Physiological Growth and Yield of Rice under High Temperature

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Elevated CO ₂ and Phosphate Limitation Favor Micromonas pusilla through Stimulated Growth and Reduced Viral Impact