Growth, photosynthesis, and ion distribution in hydroponically cultured Populus alba L. cuttings grown under various salinity concentrations

Mao, Hui Ping; Iwanaga, Fumiko; Yamanaka, Norikazu; Yamamoto, Fukuju

doi:10.1007/s11355-008-0042-7

Cited by 18 publications

(14 citation statements)

References 32 publications

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“…For the determination of ion composition (Mao et al 2008), leaves and roots were powdered and digested in a solution of three acids (10:4:1, HNO 3 :HClO 4 :H 2 SO 4 ) at 200-350°C on a hot plate. The extracted solutions were used to determine the concentrations of Na ?…”

Section: Plant Materials and Methodsmentioning

confidence: 99%

“…Salt accumulation in plant cells disrupts ion homeostasis and possibly causes deficiency of essential nutrients (Chartzoulakis 2005). These physiological difficulties result in leaf damage, including scorching, lower stomatal conductance, inhibition of photosynthetic activity, growth inhibition of shoots and roots, and in severe cases, high mortality of plants (Mao et al 2008). On the other hand, the route for salt entry in saline-submerged plants would be different from that in plants flooded with saline water (Wainwright 1984).…”

Section: Introductionmentioning

confidence: 99%

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Effects of total submergence in saltwater on growth and leaf ion content of preflooded and unflooded Taxodium distichum saplings

et al. 2009

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Preconditioning by hypoxic condition would contribute higher tolerance to anoxic condition in physiological and metabolic aspects of various plant species. In expectation of improvement of salinity tolerance, effects of preconditioning with soil flooding on growth responses and photosynthetic activity in relation to Na ? content in leaves and roots were studied using 2-year-old Taxodium distichum saplings. A submergence experiment was performed at three salt concentrations (0, 4000, and 8000 ppm NaCl), and preconditioning was started 2 months prior to the beginning of submergence treatments. Continuous soil flooding with freshwater as a control did not inhibit growth in height and stimulated diameter increment of the saplings. Saplings submerged in saltwater and freshwater also showed no morphological changes during submergence treatments. However, leaf injury and shoot dieback were observed in drained saplings that had been submerged in saltwater. Na ? and K ? ion contents increased with increases in salt concentration in both preconditioned and unconditioned saplings, whereas ion contents in preconditioned saplings tended to be higher than those of unconditioned saplings.

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Section: Plant Materials and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of total submergence in saltwater on growth and leaf ion content of preflooded and unflooded Taxodium distichum saplings

et al. 2009

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“…Plants can adapt to salinity by tolerating or avoiding salt uptake. Some plants can achieve salt tolerance by osmotic adjustment (Mao et al, 2008). Many researchers have studied salt tolerance of herbaceous plants after they are exposed to high salts.…”

Section: Introductionmentioning

confidence: 99%

Morphological and Physiological Responses of Purple Chrysanthemum (Aster Sphathulifolius) Under Long-Term Stress of Calcium Chloride as Deicing Salt

Ju¹

2018

Appl. Ecol. Env. Res.

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Abstract. Long-term research on the effect of deicers on groundcover plants can open up usage of groundcover plants for ornamental purposes on the roadside affected by deicer salt. The objective of this study was to investigate the long-term effect of CaCl 2 on morphological and physical responses of purple chrysanthemum (Aster sphathulifolius) grown in a greenhouse. Five different concentrations (0, 1, 2, 5, 10, and 15 g/L) of road deicer (CaCl 2 74%) solutions (100 ml) were applied twice a week for a 5 month period. Survival rate, growth parameter, biomass, and physiological indices were measured. Increased CaCl 2 concentration resulted in decreased survival rate, especially at concentrations higher than 10 g/L. Exposure to increasing CaCl 2 concentrations resulted in dramatic decreases in growth index, number of leaves, leaf width, and leaf length at concentration higher than 2 g/L. Biomass was also negatively affected by increasing deicer salt stress, with shoot mass being reduced more than root fresh weight. Chlorophyll b content was decreased, while chlorophyll a and proline contents in leaves had a gradual increase when plants were exposed to increasing salt stress. Although a clear roadside negative effect did exist, there was no significant difference between plants under 1 g/L of CaCl 2 and control treatment for 5 months. Our results suggest that Aster sphathulifolius planting could be highly beneficial to the roadside or urban areas with mildly salt-affected soils.

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“…When growing under saline conditions, plants may exhibit reduced leaf area, height, net photosynthesis, stomatal conductance, and transpiration, and may produce osmolytic compounds (Mao et al 2008). Flooding or waterlogging with seawater or freshwater is also a very important environmental stress worldwide and causes oxygen deficiency in the rhizosphere (Pierdomenico et al 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Populus alba is native to northwest China, whereas Populus nigra is native to Europe but is widely distributed throughout China (Zheng 1983). There has been little research into the salt tolerance of these two species (Mao et al 2008), and much less into the interactive effects of salinity and oxygen deficiency in root systems in relation to flooding.…”

Section: Introductionmentioning

confidence: 99%

Responses to nonaeration and/or salinity stress in hydroponically cultured Populus nigra and Populus alba cuttings

et al. 2009

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Growth, photosynthesis, and Na ? , K ? , Ca 2? , and Mg 2? distributions were examined in two-year-old hydroponically cultured Populus nigra and Populus alba cuttings exposed to salt stress (0, 50, or 100 mM NaCl) for four or six weeks and to nonaeration stress for one or three weeks, followed by a three-week aeration period in 2/ 5 Hoagland solution. Salt stress with 100 mM NaCl totally inhibited height increase in P. nigra cuttings. Combined salinity and nonaeration inhibited height increase to a greater degree than either stress alone in both species. Simple salt stress did not affect diameter increase in P. alba, whereas combined high salinity (100 mM NaCl) and nonaeration inhibited diameter increase. Growth and biomass accumulation were more sensitive to salt stress in P. nigra cuttings than in P. alba, although P. alba showed a more rapid decrease in photosynthesis in response to nonaeration stress. Ion distributions in the leaves and roots differed between species. P. alba was superior to P. nigra in terms of Na ? exclusion capacity, such that most of the absorbed Na ? was confined to the root system, with little reaching the leaves. The distributions of K ? , Ca 2? , and Mg 2? in the leaves and roots of each species under the two stressors were also analyzed. The lower Na ? /K ? ratio in leaves indicated that P. alba was more tolerant to salt stress than P. nigra.

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Growth, photosynthesis, and ion distribution in hydroponically cultured Populus alba L. cuttings grown under various salinity concentrations

Cited by 18 publications

References 32 publications

Effects of total submergence in saltwater on growth and leaf ion content of preflooded and unflooded Taxodium distichum saplings

Effects of total submergence in saltwater on growth and leaf ion content of preflooded and unflooded Taxodium distichum saplings

Morphological and Physiological Responses of Purple Chrysanthemum (Aster Sphathulifolius) Under Long-Term Stress of Calcium Chloride as Deicing Salt

Responses to nonaeration and/or salinity stress in hydroponically cultured Populus nigra and Populus alba cuttings

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