Photosynthetic response of Populus euphratica to salt stress

Ma, Haiching; Fung, Lindsay; Wang, Shasheng; Altman, Arie; Hüttermann, Aloys

doi:10.1016/s0378-1127(96)03943-6

Cited by 98 publications

(68 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the present study, high nitrate stress resulted in the increase of chlorophyll a/b and the decrease of carotenoids/chlorophyll ( Figure 3B, 3C). This is in accordance with the results reported by Ma et al(1997). The increase of chlorophyll a/b is possibly due to less sensitivity of chlorophyll a to salt stress than chlorophyll b (Stoeva and Kaymakanova, 2008).…”

Section: Discussionsupporting

confidence: 92%

Changes in growth and photosynthetic capacity of cucumber seedlings in response to nitrate stress

Yang

Wang

Wei

et al. 2009

Braz. J. Plant Physiol.

View full text Add to dashboard Cite

The effects of three nitrate levels -14(CK), 56(T-1), and 140 mmol L -1 (T-2) -on growth and photosynthetic capacity of cucumber (Cucumis sativus L. cv. Xintaimici) seedlings grown in hydroponic culture were investigated. The results showed that at 12 d after treatment plant height, stem diameter, leaf area, and leaf number of cucumber seedlings were stimulated by 56 mmol L -1 nitrate, whereas were inhibited significantly by 140 mmol L -1 nitrate compared with CK. Short-term stimulation in photosynthetic rate occurred under T-1 treatment, and then recovered to the level of CK. Photosynthetic rate of T-2 seedlings significantly decreased over treatment course with respect to CK. Photosynthetic pigment content of T-1 and T-2 increased during the first 2 d, and gradually recovered to the level of CK thereafter. Chlorophyll a/b and carotenoids/chlorophyll of T-1 had no significant difference from CK during treatment period. During the first 4 d, there was no significant difference in chlorophyll a/b and carotenoids/chlorophyll between T-2 and CK. After 4 d, chlorophyll a/b of T-2 increased gradually, whereas carotenoids/chlorophyll decreased. Actual PSII efficiency (Φ PSII ) and photochemical quenching (qP) of T-1 had no significant difference from CK, and non-photochemical quenching (qN) was a little higher than CK after 2 d. During the first 2 d, there was little difference in Φ PSII and qP between T-2 and CK. After 2 d, both Φ PSII and qP of T-2 decreased to a great extend. A significant increase in qN of T-2 occurred over treatment course. With respect to CK, Hill reaction activity of T-1 slightly decreased, and T-2 treatment resulted in a significant decrease of Hill reaction activity. This evidence indicates that high-level nitrate stress may reduce photosynthesis through its effects not only on stomatal conductance but on the photosynthetic apparatus.

show abstract

Section: Discussionsupporting

confidence: 92%

Changes in growth and photosynthetic capacity of cucumber seedlings in response to nitrate stress

Yang

Wang

Wei

et al. 2009

Braz. J. Plant Physiol.

View full text Add to dashboard Cite

show abstract

“…(P. euphratica) was less inhibited as compared to the hybrid, P. talassica Kom · (P. euphratica + Salix alba L.) (Ma et al 1997). In general, the Pn reduction in response to an initial osmotic shock caused by NaCl was mainly the result of decreased stomatal conductance (Chen et al 2002a), while in a longer-term of severe salt stress, the declined Pn was largely due to non-stomatal limitations (Ma et al 1997).…”

Section: Introductionmentioning

confidence: 94%

“…are one of the most important tree species for afforestation in north China, but the productivity of fastgrowing poplars is usually restricted by soil salinity. Comparative studies have been carried out to determine the salt tolerance of several poplar genotypes (Ma et al 1997;Fung et al 1998). Results showed that salt stress reduced photosynthesis of poplar leaves, but there was much variation in salt tolerance among genotypes of Populus.…”

Section: Introductionmentioning

confidence: 99%

Leaf photosynthesis, fluorescence response to salinity and the relevance to chloroplast salt compartmentation and anti-oxidative stress in two poplars

Wang

Chen

Deng

et al. 2007

Trees

Self Cite

View full text Add to dashboard Cite

In a 16-day study, the effect of increasing soil NaCl on leaf photosynthesis, chlorophyll a fluorescence, chloroplast ion compartmentation, variations of SOD (superoxide dismutase) and POD (peroxidase) isoenzymes and the relevance to salt resistance were investigated in seedlings of Populus euphratica Oliv. (P. euphratica) (saltresistant) and rooted cuttings of P. ''popularis 35-44'' (P. popularis) (salt-sensitive). Initial salinity caused a rapid decline of net photosynthetic rate (Pn) and unit transpiration rate (TRN) in P. euphratica, resulting from the NaClinduced stomatal closure. In a longer-term of salinity, CO 2 assimilation in P. popularis was severely reduced whereas stressed P. euphratica maintained a relatively higher and constant level of Pn. Pn-Ci curves showed that salt stress (12 days) reduced CO 2 saturation point (CSP), CO 2 saturated Pn (CSP n ), and carboxylation efficiency (CE), but increased CO 2 compensation point (CCP) in the two genotypes. Similarly, salinity lowered light saturation point (LSP), light saturated Pn (LSP n ), and apparent quantum yield (AQY) in both genotypes but the inhibitory effect of NaCl on light reaction was more pronounced in P. popularis, as compared to P. euphratica. Chlorophyll a fluorescence data indicated that a longer-term of salt stress (12 days) exhibited a marked influence on fluorescence parameters of P. popularis in both dark-and light-adapted states: (a) NaCl inhibited the maximal efficiency of PSII photochemistry (Fv/Fm) due to the salt-induced increase of Fo (the minimal fluorescence) and the marked decline of Fm (the maximal fluorescence); (b) salinity decreased coefficient of photochemical quenching (qP) but markedly elevated coefficient of nonphotochemical quenching (qN) in the light-adapted state. In contrast, there were no corresponding changes of chlorophyll a fluorescence in salinised P. euphratica. X-ray microanalysis results showed that salinity caused salt accumulation in the chloroplasts of P. popularis in which Na + and Cl -increased up to 42 and 221 mmol dm -3 , respectively. Great buildup of Na + and Cl -in chloroplasts of P. popularis may exhibit direct and indirect restrictions on dark and light reactions. The activity of SOD isoenzymes (CuZn-SOD I and CuZn-SOD II) and POD isoenzymes in P. popularis decreased with increasing exposure period, and leaf malondialdehyde (MDA) content and membrane permeability (MP) increased correspondingly. In contrast to P. popularis, stressed P. euphratica maintained activity of SOD and POD isoenzymes and there was no significant increase of MDA and MP during the period of salt stress. In conclusion, P. euphratica plants exhibited a higher capacity to maintain the activity of anti-oxidant enzymes and restrict salt accumulation in the chloroplasts, the photosynthesis processes were less restricted consequently.

show abstract

“…The primary step in energy production in the biosphere, photosynthesis, is inhibited by salt and alkali stress (Ma et al 1997;Yang et al 2009). Photosynthetic capacity has been observed to be much lower under both salt and alkali stresses than in control plants in the glycophytes wheat and barley, and the inhibition was more severe under alkali stress than salt stress (Yang et al 2008c).…”

Section: Photosynthesismentioning

confidence: 99%

Integrated proteomics and metabolomics for dissecting the mechanism of global responses to salt and alkali stress in Suaeda corniculata

et al. 2016

View full text Add to dashboard Cite

Background and aims Soil alkalinity and salinity are two of the most common environmental stress factors that impact plant growth and productivity. S. corniculata is native to the saline-alkali soil of Northeast China which shows a higher alkali tolerance than other suaeda plants. It will be very important to identify the effect of salt and alkali stress on S. corniculata through proteomics and metabolomics analysis to improve understanding of the resistance of plants. Methods S. corniculata seedlings were exposed to salt and alkali stress for 72 h, respectively. Metabolic changes were quantified by conducting MS-based proteomics and NMR-based metabolomics analysis.Results The response of S. corniculata to salt stress was distinct from that of plants subjected to alkali stress at both physiological and molecular levels. The integrated-omic studies identified 22 and 19 differentially expressed proteins and metabolites mainly involved in carbohydrate metabolism and amino acid metabolism. Conclusions On account of the up-regulation of energy metabolism and higher accumulation of organic osmolytes, S. corniculata shows high pH resistance when it suffers alkali stress. These findings provide insights into the different regulatory mechanisms in halophyte S. corniculata response to salt and alkali stresses.

show abstract

Photosynthetic response of Populus euphratica to salt stress

Cited by 98 publications

References 6 publications

Changes in growth and photosynthetic capacity of cucumber seedlings in response to nitrate stress

Changes in growth and photosynthetic capacity of cucumber seedlings in response to nitrate stress

Leaf photosynthesis, fluorescence response to salinity and the relevance to chloroplast salt compartmentation and anti-oxidative stress in two poplars

Integrated proteomics and metabolomics for dissecting the mechanism of global responses to salt and alkali stress in Suaeda corniculata

Contact Info

Product

Resources

About