Effects of NaCl on shoot growth, transpiration, ion compartmentation, and transport in regenerated plants of Populus euphratica and Populus tomentosa

2003 ◽  
Vol 33 (6) ◽  
pp. 967-975 ◽  
Author(s):  
Shaoliang Chen ◽  
Jinke Li ◽  
Shasheng Wang ◽  
Eberhard Fritz ◽  
Aloys Hüttermann ◽  
...  
Keyword(s):  
Shoot Growth ◽  
Populus Euphratica ◽  
Populus Tomentosa ◽  
Salt Transport ◽  
Relative Growth Rates ◽  
Regenerated Plants ◽  
Salt Exclusion ◽  
Populus Tomentosa Carr ◽  
Uptake And Transport ◽  
Ion Compartmentation

The effect of a 20-day NaCl treatment on shoot growth, transpiration, ion uptake and transport, and intracellular ion compartmentation was investigated in regenerated plants of Populus euphratica Oliv. and Populus tomentosa Carr. Plants watered with 100 mM NaCl for 8 days and then 200 mM NaCl for 12 days exhibited soil NaCl concentrations of 60 and 95 mM, respectively. Unit transpiration rates and relative growth rates of P. tomentosa were restricted more by salinity as compared with P. euphratica. Salinized P. tomentosa exhibited leaf necrosis whereas no damage was seen in stressed P. euphratica. Compared with P. tomentosa, P. euphratica had considerably lower rates of net root uptake and transport of salt ions (Na+ and Cl–) to the shoots under salinity. The relatively lower unit transpiration rates of P. euphratica and the lower salt concentrations in the xylem of salinized P. euphratica contribute to its greater capacity for salt exclusion. X-ray microanalysis showed that P. euphratica had a greater ability to restrict radial salt transport in roots by blocking apoplasmic salt transport and sequestering more Cl– in cortical vacuoles. In addition, P. euphratica maintained higher K+ uptake and transport than P. tomentosa in the presence of high external Na+ concentrations.

Influence of vesicular – arbuscular mycorrhizal infection and soil phosphorus level on growth and carbon metabolism of soybean

1988 ◽  
Vol 66 (11) ◽  
pp. 2311-2316 ◽  
Author(s):  
Arthur L. Fredeen ◽  
Norman Terry
Keyword(s):  
Shoot Growth ◽  
Leaf Surface ◽  
Soil Phosphorus ◽  
Arbuscular Mycorrhizal ◽  
Mycorrhizal Infection ◽  
Extractable P ◽  
Vesicular Arbuscular ◽  
Glycine Max L ◽  
Low Levels ◽  
Uptake And Transport

The effect of vesicular–arbuscular (VA) mycorrhizal infection on growth and photosynthesis in nodulated soybean (Glycine max (L.) Merr. cv. Hobbit) plants cultured at high and low levels of soil phosphorus (P) was explored in a 2 × 2 factorial experiment. The high- and low-P soils were constituted by adding 200 and 40 μg P (KH2PO4) ∙ g−1, respectively, to a low-P soil (8 μg ∙ g−1 bicarbonate extractable P). Mycorrhizal (Glomus fasciculatum Thaxter sensu Gerdemann) and non-mycorrhizal inocula were added to each soil, thereby constituting the two mycorrhizal treatments. In plants grown in low-P soil, VA mycorrhizal infection resulted in higher foliar P concentrations (compared with the nonmycorrhizal treatment) and in significantly greater shoot and nodule dry weights. In plants grown in high-P soil, VA mycorrhizal infection had no significant or consistent effect on shoot or root dry weights or on P concentrations, and decreased nodule weight. Photosynthetic rates were not affected by VA mycorrhizal infection or P treatment. These results suggest that in low P grown plants, VA mycorrhizal infection increased the uptake and transport of P to leaves and that this, in turn, resulted in greater rates of shoot growth via an increased production of photosynthate, not because of an increase in photosynthesis on a leaf are basis but because of an increase in the rate of expansion of the leaf surface.

scholarly journals Induction of PtoCDKB and PtoCYCB transcription by temperature during cambium reactivation in Populus tomentosa Carr.

2009 ◽  
Vol 60 (9) ◽  
pp. 2621-2630 ◽  
Author(s):  
W.-F. Li ◽  
Q. Ding ◽  
J.-J. Chen ◽  
K.-M. Cui ◽  
X.-Q. He
Keyword(s):  
Populus Tomentosa ◽  
Populus Tomentosa Carr

A comparative study of the stomata and PM2.5particles on the leaf surface of Chinese white poplar (Populus tomentosa Carr.) in different polluted places

2015 ◽  
Vol 35 (22) ◽  
Author(s):  
石婕 SHI Jie ◽  
刘庆倩 LIU Qingqian ◽  
安海龙 AN Hailong ◽  
曹学慧 CAO Xuehui ◽  
刘超 LIU Chao ◽  
...  
Keyword(s):  
Comparative Study ◽  
Leaf Surface ◽  
Populus Tomentosa ◽  
White Poplar ◽  
Chinese White ◽  
Populus Tomentosa Carr ◽  
Chinese White Poplar

scholarly journals Identification of microRNAs Involved in Regeneration of the Secondary Vascular System in Populus tomentosa Carr

2016 ◽  
Vol 7 ◽  
Author(s):  
Fang Tang ◽  
Hairong Wei ◽  
Shutang Zhao ◽  
Lijuan Wang ◽  
Huanquan Zheng ◽  
...  
Keyword(s):  
Vascular System ◽  
Populus Tomentosa ◽  
Populus Tomentosa Carr

Antiinflammatory effects of Tremulacin, a Salicin-related substance isolated from Populus tomentosa Carr. leaves

Phytomedicine ◽  
1994 ◽  
Vol 1 (3) ◽  
pp. 209-211 ◽  
Author(s):  
G.F. Cheng ◽  
D.P. Liu ◽  
D.X. Yang ◽  
K.Q. He ◽  
J.Y. Bai ◽  
...  
Keyword(s):  
Populus Tomentosa ◽  
Related Substance ◽  
Populus Tomentosa Carr ◽  
Antiinflammatory Effects

Carbon and nitrogen allocation patterns of Douglas-fir seedlings fertilized with nitrogen in autumn. II. Field performance

1986 ◽  
Vol 16 (5) ◽  
pp. 903-909 ◽  
Author(s):  
H. A. Margolis ◽  
R. H. Waring
Keyword(s):  
Free Amino ◽  
Shoot Growth ◽  
Field Performance ◽  
Growing Season ◽  
Frost Damage ◽  
Douglas Fir ◽  
Summer Drought ◽  
Tree Roots ◽  
Relative Growth ◽  
Relative Growth Rates

October-fertilized and unfertilized 2-0 Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) seedlings were outplanted the following February. Half of each planting block was seeded with grass to induce water stress during the typical summer drought. Sucrose was applied to soil around each seedling to limit availability of nitrogen to tree roots. Fertilized seedlings broke bud 9–10 days earlier, produced more shoot growth, and, as shown in later harvests, had higher relative growth rates than unfertilized seedlings. However, initial differences in growth response were due primarily to the earlier budbreak. Seedlings growing with grass had predawn water potentials of −1.5 MPa by early August; by September 3, unfertilized seedlings growing with grass were significantly more stressed than any others. Although free amino acid and total nitrogen concentrations were higher in fertilized than unfertilized seedlings when planted, they became equal by the end of one growing season. However, fertilized seedlings contained more free amino acids and nitrogen because of their greater size. Grass competition affected both seedling nitrogen and carbohydrate chemistry. After one growing season, fertilized seedlings had greater height increment, shoot growth, leaf area, relative growth rate, and production per unit nitrogen. Although autumn fertilization benefited these Douglas-fir seedlings, negative effects could result from carbohydrate depletion because of increased respiration or from frost damage because of earlier budbreak.

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