Results. Compared with tobacco plants grown under °C, treatments with and °C inhibited the expansion of leaves. The contents of superoxide anion (O 2 ·−), hydr
We describe an efficient method for the rapid quantitative determination of the abundance of three acidic plant hormones from a single crude extract directly by LC/MS/MS. The method exploits the sensitivity of MS and uses multiple reaction monitoring and isotopically labelled samples to quantify the phytohormones abscisic acid, jasmonic acid and salicylic acid in Arabidopsis leaf tissue.
Effects of salicylic acid on stress resistance of seeds and seedling: XIA Fangshan, MAO Peisheng, YAN Huifang, WANG Mingya: China Agricultural University, College of Animal Science and Technology, Beijing Key Laboratory of Grassland Science, Department of Grassland Science, Beijing 100193, China
salicylic acid acts by mimicking an endogenous phenolic signal that triggers PRgene expression and disease resistance. Our results suggest that the signal is salicylic acid itself. Susceptible Xanthi (nn) plants carry the PRgenes, and these genes can be activated bytreatment with exogenous salicylic acid (Fig. IC) but not with
growth of cucumber plants in the greenhouse: Seeds of cv. Eshrak28 were soaked overnight in 10 mg L1. of different salts ( Na. 2. HPO. 4, K. 2. HPO. 4, ascorbic acid, salicylic acid, citric acid and indol acetic acid) . Each treatment was replicated three times with three pots planted with seeds soaked in water to serve as control.
application of 2 mM salicylic acid to plants that had been infected with fungi. Base of the results obtained, the application of mM salicylic acid resulted in the reduction of tuber losses caused by Rizoctonia fungi. Key words: Solanum tuberosum Rizoctonia solani infection Salicylic acid INTRODUCTION viruses. Because the entire plant ...
Abstract. The cotyledons of cucumber were used to investigate the effects of Nd 3+ and La 3+ on physiological characters in respect of plant resistance. The cucumber cotyledons were sprayed with 15 μg · ml −1 Nd 3+ and La 3+, and the changes on salicylic acid (SA) and SA 2Oβglucoside (SAG) contents, the generation of · O 2 −, and β1, 3glucanase and chitinase activities were measured.
Background. In higher plants, salicylic acid (SA) plays important roles in inducing resistance to biotic and abiotic stresses. Tomato yellow leaf curl virus (TYLCV) causes a highl
Nov 01, 2017· NPR1 The Arabidopsis NPR1 gene is a positive regulator of inducible plant disease resistance. Expression of NPR1 is induced by pathogen infection or treatment with defense inducing compounds such as salicylic acid (SA). Transgenic plants overexpressing NPR1 exhibit enhanced resistance to a broad spectrum of microbial pathogens. Whereas plants under expressing the gene .
The effect of salicylic acid on the resistance of Gracilaria lichevoides to chilling injury was studied through in vitro physiological was found that mmol/L SA could reduce the content of MDA(a product of membrane lipid peroxidation) and relative conductivity and enhance the proline content,special growth rate and the activities of SOD,POD,and , 6～8 ...
Determination of salicylic acid Salicylic acid extraction was based on the method of Gaffney et al.  with modiﬁcations to allow for a higher throughput approach and recovery. Plant material was ground to a ﬁne powder in liquid nitrogen. Results are the average of .
Signal production by inoculated leaves. Cucumber seedlings were infiltrated on the second leaf with P. syringae cells at 50 sites per leaf. The inoculated leaves were removed from plants at various times and systemic chitinase accumulation was measured ...
Salicylic acid improves chilling tolerance_生物学_自然科学_专业资料 59人阅读|11次下载. Salicylic acid improves chilling tolerance_生物学_自然科学_专业资料。Braz. J. Bot (2014) 37(3):357–363 DOI /s SHORT COMMUNICATION Salicylic acid
Oct 27, 2017· Seed defense biopriming with autoclaved culture medium from strain PB69 elicits induced resistance in cucumber plants under pot (a−d) and .
Chilling stress is an important constraint for maize seedling establishment in the field. To examine the role of salicylic acid (SA) and hydrogen peroxide (H2O2) in response to chilling stress, we investigated the effects of seed priming with SA, H2O2 and SA+H2O2 combination on maize resistance under chilling stress (13°C). Priming with SA, H2O2 and especially SA+H2O2 shortened seed ...
Physiological effect of indole3butyric acid and salicylic acid on growth, yield and chemical constituents of onion plants. Journal of Applied Science Research, 3(11), 1554−1563. Bideshki, A. Arvin, M. J. (2010). Effect of salicylic acid (SA) and drought stress on growth bulb yield and allicin content of garlic in field.
Salicylic acid (SA) was loaded in the hydrogel as the chilling resistance agent. SAloaded P(NIPAmcoBMA) was used for seed filmcoating of two maize varieties, Huang C (HC, chillingtolerant) and Mo17 (chillingsensitive), to investigate the coated seed germination and seedling growth status under chilling .
The seedlings of tomato at five leaves stage were treated with study the effects of SA and low temperature on physiological indexes of resistance to chilling result showed that SA could enhance resistance of chilling injury to seeding of tomato after low temperature found that SA could reduce relative EC,enhance activity of POD content of chlorophyll and solute protein to the .
The salicylic acid signal in plants ... ing that it plays a role in disease resistance re sponses in plants raises the possibility of some fascinating parallels between SA action in plants and animals. Salicylic acid in plants SA is one of numerous phenolic compounds, de fined as .
Jun 30, 2015· Salicylic acidinduced abiotic stress tolerance and underlying mechanisms in plants M. Iqbal R. Khan 1, Mehar Fatma 1, Tasir S. Per 1, Naser A. Anjum 2* and Nafees A. Khan 1 1 Department of Botany, Aligarh Muslim University, Aligarh, India