Effects of Short-Term High Temperature on Photosynthesis and Photosystem II Performance in Sorghum

Ke, Yan; Chen, P.; Shao, Haibing; Zhang, L.; Xu, Guoce

doi:10.1111/j.1439-037x.2011.00469.x

Cited by 62 publications

(37 citation statements)

References 46 publications

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“…However, a lot of studies have focused on the metal tolerance and metal concentration in hyperaccumulator tissues [39,[46][47][48][49][50][51][52][53][54][55][56][57][58][59], but ignored the biomass production, which limited the applicability of results in terms of actual phytoextraction. For example, fast-growing plant as poplar (Populus deltoids Â Populus nigra) exhibited high phytoextraction efficiency with high biomass production (Tab.…”

Section: Discussionmentioning

confidence: 99%

Phytoremediation of Cadmium‐Contaminated Soil by Two Jerusalem Artichoke (Helianthus tuberosus L.) Genotypes

Long¹,

Ni²,

Wang³

et al. 2012

CLEAN Soil Air Water

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Research ArticlePhytoremediation of Cadmium-Contaminated Soil by Two Jerusalem Artichoke (Helianthus tuberosus L.) Genotypes Jerusalem artichoke (Helianthus tuberosus L.) can be used not just for bioethanol production, bur potentially also for soil phytoremediation via removal of heavy metal pollutants. An experiment was carried out to characterize the phytoextraction efficiency of two Jerusalem artichoke genotype (NY2 and NY5) in cadmium (Cd) contaminated soil. After 90 days of growth, NY5 had greater plant biomass and greater Cd accumulation in tissues than NY2. The chlorophyll content and chlorophyll a fluorescence parameters were slightly higher when plants were grown in Cd-contaminated versus control soil. It implies that this examined NY2 and NY5 can extract more Cd than some hyperaccumulators, indicating that NY2 and NY5 can be applied to clean up Cd-contaminated soils. Compared with NY2, NY5 had higher phytoextraction potential due to more biomass and higher concentrations of Cd in tissues, and may therefore be the better candidates for phytoremediation in Cd-contaminated soil.

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Section: Discussionmentioning

confidence: 99%

Phytoremediation of Cadmium‐Contaminated Soil by Two Jerusalem Artichoke (Helianthus tuberosus L.) Genotypes

Long¹,

Ni²,

Wang³

et al. 2012

CLEAN Soil Air Water

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“…Various key components of the photosynthetic machinery including membranes, photosystem II and enzymes in the Calvin cycle were considered as limiting components at elevated temperature (Feller et al, 1998;Salvucci, 2000, 2004;Salvucci et al, 2001;Salvucci and Crafts-Brandner, 2004;Sharkey, 2005;Hozain et al, 2010;Yan et al, 2011;Carmo-Silva et al, 2012;Xu et al, 2013). Rubisco activase was identified as a key protein for the thermotolerance of photosynthesis and was therefore investigated by several groups in more detail (Salvucci et al, 2001;Sharkey, 2005;Portis et al, 2008;Kaiser et al, 2015).…”

Section: Impacts On Rubisco and Rubisco Activasementioning

confidence: 99%

Drought stress and carbon assimilation in a warming climate: Reversible and irreversible impacts

Feller

2016

Journal of Plant Physiology

123

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Global change is characterized by increased CO2 concentration in the atmosphere, increasing average temperature and more frequent extreme events including drought periods, heat waves and flooding. Especially the impacts of drought and of elevated temperature on carbon assimilation are considered in this review. Effects of extreme events on the subcellular level as well as on the whole plant level may be reversible, partially reversible or irreversible. The photosynthetically active biomass depends on the number and the size of mature leaves and the photosynthetic activity in this biomass during stress and subsequent recovery phases. The total area of active leaves is determined by leaf expansion and senescence, while net photosynthesis per leaf area is primarily influenced by stomatal opening (stomatal conductance), mesophyll conductance, activity of the photosynthetic apparatus (light absorption and electron transport, activity of the Calvin cycle) and CO2 release by decarboxylation reactions (photorespiration, dark respiration). Water status, stomatal opening and leaf temperature represent a "magic triangle" of three strongly interacting parameters. The response of stomata to altered environmental conditions is important for stomatal limitations. Rubisco protein is quite thermotolerant, but the enzyme becomes at elevated temperature more rapidly inactivated (decarbamylation, reversible effect) and must be reactivated by Rubisco activase (carbamylation of a lysine residue). Rubisco activase is present under two forms (encoded by separate genes or products of alternative splicing of the premRNA from one gene) and is very thermosensitive. Rubisco activase was identified as a key protein for photosynthesis at elevated temperature (non-stomatal limitation). During a moderate heat stress Rubisco activase is reversibly inactivated, but during a more severe stress (higher temperature and/or longer exposure) the protein is irreversibly inactivated, insolubilized and finally degraded. On the level of the leaf, this loss of photosynthetic activity may still be reversible when new Rubisco activase is produced by protein synthesis. Rubisco activase as well as enzymes involved in the detoxification of reactive oxygen species or in osmoregulation are considered as important targets for breeding crop plants which are still productive under drought and/or at elevated leaf temperature in a changing climate.

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“…1). O-J-I-P transient has been accepted as a reliable and popular tool in photosynthetic research, especially to study PSII behavior in recent years (Wen et al 2005;Strauss et al 2007;Toth et al 2007;Yang et al 2007;Chen et al 2008;Rapacz et al 2008;Yan et al 2008Yan et al , 2011Li et al 2009;Mehta et al 2010;Rapacz et al 2010;Jedmowski et al 2013). O, J, I and P are a sequence of phases in the kinetics of fast fluorescence rise, and environmental stress often provokes the occurrence of K phase in this transient, suggesting the damage to oxygen-evolving complex in donor side of PSII (Strasser et al 2004).…”

Section: Plant Biomass and Photosynthesismentioning

confidence: 99%

Physiological adaptive mechanisms of plants grown in saline soil and implications for sustainable saline agriculture in coastal zone

et al. 2013

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There is large area of saline abandoned and lowyielding land distributed in coastal zone in the world. Soil salinity which inhibits plant growth and decreases crop yield is a serious and chronic problem for agricultural production. Improving plant salt tolerance is a feasible way to solve this problem. Plant physiological and biochemical responses under salinity stress become a hot issue at present, because it can provide insights into how plants may be modified to become more tolerant. It is generally known that the negative effects of soil salinity on plants are ascribed to ion toxicity, oxidative stress and osmotic stress, and great progress has been made in the study on molecular and physiological mechanisms of plant salinity tolerance in recent years. However, the present knowledge is not easily applied in the agronomy research under field environment. In this review, we simplified the physiological adaptive mechanisms in plants grown in saline soil and put forward a practical procedure for discerning physiological status and responses. In our opinion, this procedure consists of two steps. First, negative effects of salt stress are evaluated by the changes in biomass, crop yield and photosynthesis. Second, the underlying reasons are analyzed from osmotic regulation, antioxidant response and ion homeostasis. Photosynthesis is a good indicator of the harmful effects of saline soil on plants because of its close relation with crop yield and high sensitivity to environmental stress. Particularly, chlorophyll a fluorescence transient has been accepted as a reliable, sensitive and convenient tool in photosynthesis research in recent years, and it can facilitate and enrich photosynthetic research under field environment.

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Effects of Short-Term High Temperature on Photosynthesis and Photosystem II Performance in Sorghum

Cited by 62 publications

References 46 publications

Phytoremediation of Cadmium‐Contaminated Soil by Two Jerusalem Artichoke (Helianthus tuberosus L.) Genotypes

Phytoremediation of Cadmium‐Contaminated Soil by Two Jerusalem Artichoke (Helianthus tuberosus L.) Genotypes

Drought stress and carbon assimilation in a warming climate: Reversible and irreversible impacts

Physiological adaptive mechanisms of plants grown in saline soil and implications for sustainable saline agriculture in coastal zone

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