Effect of NaCl on growth, photosynthesis, ion and water relations of four poplar genotypes

Fung, Lindsay; Wang, S.S; Altman, Arie; Hütterman, A

doi:10.1016/s0378-1127(97)00328-9

Cited by 73 publications

(40 citation statements)

References 15 publications

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“…Sapium sebiferum can survive larger & higher salinities thus increasing its chance of survival in coastal areas where salinity levels are rising (Corner 1994). Leaf and height growth were significantly reduced after 3 and 5 days following exposure to salinity respectively for all four experimented poplar clones (Fung et al 1998). Mean shoot J For Sci 28(1), 12-18 length of Anthocephalus chinensis were found to be highest (1.1 cm) at 28 o C than 32 o C (0.9 cm) and 24 o C (0.2 cm) after rearing in a plant growth chamber for six weeks.…”

Section: Resultsmentioning

confidence: 87%

Artocarpus chaplasha: Establishment and Initial Growth Performance at Elevated Temperature and Saline Stresses

Rahman¹,

Al-Amin²,

Akter³

2012

Journal of Forest and Environmental Science

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Like any other natural resources, forest flora may experience the extreme threat of elevated temperature and saline water submergence at different stages of their lives i.e. from germination to maturity due to climate change effects. The overall aim of the study was to measure the effect of higher temperatures along with saline water irrigation on survival and initial growth during seedling stage of Artocarpus chapalasha. The experiment was conducted in temperature-humidity-photoperiod regulated plant growth chamber during stipulated period to measure the growth performance of randomly selected seedlings. Within three different elevated temperatures viz. 30 o C, 32 o C and 34 o C, the seedlings were given three different saline conditions such as 0.5 g/L, 1.5 g/L and 2.5 g/L NaCl concentrations. Results found from the experiment was that, seedlings of Artocarpus chaplasha reared at different temperatures and saline water treatments showed stunted growth than reared at existing outdoor temperature (26.31°C) irrigated with regular fresh water. Seedling growth at three different parameters such as height, collar diameter and number of leaves showed that with increasing temperature individuals respond negatively to increasing saline condition. The seedling's growth occurred at every day in height, collar diameter and leaf. However, growth rate reduced later during the observation.The combined effect of high salinity and higher elevated temperature results in seedling mortality. Therefore, Artocarpus chaplasha may not thrive at higher temperature and salinity intrusion at its early growing period in plantation and natural forest areas.

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Section: Resultsmentioning

confidence: 87%

Artocarpus chaplasha: Establishment and Initial Growth Performance at Elevated Temperature and Saline Stresses

Rahman¹,

Al-Amin²,

Akter³

2012

Journal of Forest and Environmental Science

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“…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

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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.

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“…Moreover the role of ABA in salt stress was the focus of several studies (Shinozaki and Yamaguchi-Shinozaki 2000;Chen et al 2001Chen et al , 2002Chang et al 2006). In addition, eVects of salinity on poplar growth, water relations, stomatal conductance and CO 2 assimilation have been explored (Fung et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Salt stress affects xylem differentiation of grey poplar (Populus × canescens)

Escalante-Pérez

Lautner

Nehls

et al. 2008

Planta

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In this study the impact of salt stress on the physiology and wood structure of the salt-sensitive Populus x canescens was investigated. Two weeks of salt stress altered wood anatomy significantly. The xylem differentiation zone was reduced and the resulting vessels exhibited reduced lumina. To understand this phenomenon, ion composition, levels of corresponding transcripts and of the stress hormone ABA were analysed. With increasing sodium and chloride concentrations, a general reduction of potassium was found in roots and shoots, but not in leaves. Consequently, the corresponding K+ channel transcripts in roots favoured K+ release. The overall osmolarity in leaves was up to fourfold higher than in roots or shoots. Therefore, adjustment of the K+/Na+ balance seemed not to be required in leaves. Sodium increased gradually from roots to shoots and then to leaves indicating that sodium storage took place first in roots, then in shoots, and finally in leaves to protect photosynthesis from salt effects as long as possible. Since leaf abscisic acid levels markedly increased, stomatal closure seemed to limit CO2 uptake. As a consequence, diminished nutrient supply to the cambium in combination with lowered shoot K+ content led to decreased vessel lumina, and a reduction of the radial cambium was observed. Thus, xylem differentiation was curtailed and the development of full size vessels was impaired.

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Effect of NaCl on growth, photosynthesis, ion and water relations of four poplar genotypes

Cited by 73 publications

References 15 publications

Artocarpus chaplasha: Establishment and Initial Growth Performance at Elevated Temperature and Saline Stresses

Artocarpus chaplasha: Establishment and Initial Growth Performance at Elevated Temperature and Saline Stresses

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

Salt stress affects xylem differentiation of grey poplar (Populus × canescens)

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