Effects of drought stress on growth and chlorophyll fluorescence of Lycium ruthenicum Murr. seedlings

Guo, Youyan; Yu, Hua; Kong, D.-S.; Fang, Yan; Zhang, Y.-J.

doi:10.1007/s11099-016-0206-x

Cited by 93 publications

(50 citation statements)

References 29 publications

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“…It is known that Chl a is always higher than Chl b , and the ratio of the two can vary as a stress response to abiotic factors such as drought, heavy metals in soil, nitrogen sources limitations, etc. [Maina and Wang, 2014; Guo et al, 2016]. In our experiment, it could be an indication that the exposure to EM irradiation was a source of stress for the plants.…”

Section: Discussionsupporting

confidence: 55%

Effects of Long‐Term Exposure to Low‐Power 915 MHz Unmodulated Radiation on Phaseolus vulgaris L.

Surducan

Neamţu

Moţ

et al. 2020

Bioelectromagnetics

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The morphophysiological response of Phaseolus vulgaris L. to low‐power electromagnetic radiation was investigated in order to assess the potential harmful effects of long‐term continuous exposure. The plants were grown in two separate electromagnetic field (EMF) shielded rooms, in a controlled, greenhouse‐like environment. One batch was continuously irradiated during the growth period (from sowing to maturity) and the other one was used as a reference. An unmodulated signal at 915 MHz (the central frequency between the uplink and downlink of the GSM900 mobile communications band) was used, with a maximum power density of 10 mW/m2 measured near the plants. The plants were analyzed using ultraviolet–visible, statistical, morphometric, and electron microscopy methods. Significant differences were observed regarding the height of the plants, number of inflorescences, and chlorophyll and carotenoid content, all closely connected with the ultrastructural changes observed in the leaves. The irradiated batch grew higher (19% increase in plant height, 20% increase in stem and leaves' dry mass), with 18% fewer inflorescences, and extremely long roots (34% increase in dry mass). The ultrastructure of the irradiated leaves showed irregular cells and a higher content of plastoglobules in the chloroplasts. All results indicate that the irradiated plants suffered significant morphological modifications during their long‐term exposure to the specific EM radiation. Bioelectromagnetics. © 2020 Bioelectromagnetics Society

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Section: Discussionsupporting

confidence: 55%

Effects of Long‐Term Exposure to Low‐Power 915 MHz Unmodulated Radiation on Phaseolus vulgaris L.

Surducan

Neamţu

Moţ

et al. 2020

Bioelectromagnetics

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“…Chlorophyll degradation and/or chlorophyll synthesis deficiency occur when plants are subjected to drought stress (Ahmed et al, 2009;Rahbarian et al, 2011;Guo et al, 2016). According to Hussein et al (2008) drought stress resulted in chlorophyll content increase, while Farhad et al (2011), Pirzad et al (2011 and Ma et al (2015) did not observe any significant changes in its content.…”

Section: Chlorophyll Contentmentioning

confidence: 99%

Effect of Biostimulants on Several Physiological Characteristics and Chlorophyll Content in Broccoli under Drought Stress and Re-watering

Kałużewicz

Krzesiński

Spiżewski

et al. 2017

Not Bot Horti Agrobo

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Drought stress is one of the many factors that lead to decreased yield in both quality and quantity. One method to improve plant resistance to this stress is application of biostimulants. The most widely used biostimulants are protein hydrolysates, containing sea algae extract and humus compounds. In the present study, the influence of the amino acids as well as combination of amino acids with Ascophyllum nodosum filtrate on broccoli (Brassica oleracea var. italica) plants cvs. 'Agassi' and 'Tiburon' was investigated. The plants were watered with Ascophyllum nodosum filtrate three days before planting and sprayed three times with amino acids two, four and six weeks after planting. The present results show that biostimulants have a significant effect on both gas exchange and transpiration rate both prior to the application of stress, under drought stress and after re-watering. Biostimulant treatment led to an increase of drought tolerance in both studied cultivars but the final effect depended on cultivar. 'Tiburon' cultivar turned out to be more tolerant to drought stress than 'Agassi'. The application of biostimulants resulted in an increase of photosynthetic rate, stomatal conductance, internal CO 2 concentration and transpiration rate in 'Agassi' cultivar under drought stress. This effect was not observed in 'Tiburon'. The chlorophyll content was higher under drought stress as compared to the value prior to stress in both cultivars.

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“…Its black fruit is primarily comprised of high concentrations of anthocyanin, essential oils, and polysaccharides, which are believed to perform functions in immunoregulation, anti-aging, and anti-fatigue activity (Altintas et al, 2006;Zheng et al, 2011;Peng et al, 2016). Due to its outstanding trait of abiotic stress resistance especially in mixed saline-alkaline soils, L. ruthenicum is an ideal plant for preventing soil desertification and alleviating the degree of soil salinity-alkalinity, which is highly important for the ecosystem and agriculture in remote areas (Guo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Physiological characterization, transcriptomic profiling, and microsatellite marker mining of Lycium ruthenicum

Chen

Zhang

et al. 2017

J. Zhejiang Univ. Sci. B

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Lycium ruthenicum is a perennial shrub species that has attracted considerable interest in recent years owing to its nutritional value and ability to thrive in a harsh environment. However, only extremely limited transcriptomic and genomic data related to this species can be found in public databases, thereby limiting breeding research and molecular function analysis. In this study, we characterized the physiological and biochemical responses to salinealkaline mixed stress by measuring photochemical efficiency, chlorophyll content, and protective enzyme activity. We performed global transcriptomic profiling analysis using the Illumina platform. After optimizing the assembly, a total of 68 063 unique transcript sequences with an average length of 877 bp were obtained. Among these sequences, 4096 unigenes were upregulated and 4381 unigenes were down-regulated after saline-alkaline mixed treatment. The most abundant transcripts and over-represented items were assigned to gene ontology (GO) terms or Kyoto Encyclopedia of Genes and the Genomes (KEGG) categories for overall unigenes, and differentially expressed unigenes were analyzed in detail. Based on this set of RNA-sequencing data, a total of 9216 perfect potential simple sequence repeats (SSRs) were identified within 7940 unigenes with a frequency of 1/6.48 kb. A total of 77 primer pairs were synthesized and examined in wet-laboratory experiments, of which 68 loci (88.3%) were successfully amplified with specific products. Eleven pairs of polymorphic primers were verified in 225 individuals from nine populations. The inbreeding coefficient and the polymorphism information content value ranged from 0.011 to 0.179 and from 0.1112 to 0.6750, respectively. The observed and expected heterozygosities ranged from 0.064 to 0.840 and from 0.115 to 0.726, respectively. Nine populations were clustered into three groups based on a genetic diversity study using these novel markers. Our data will be useful for functional genomic investigations of L. ruthenicum and could be used as a basis for further research on the genetic diversity, genetic differentiation, and gene flow of L. ruthenicum and other closely related species.

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Effects of drought stress on growth and chlorophyll fluorescence of Lycium ruthenicum Murr. seedlings

Cited by 93 publications

References 29 publications

Effects of Long‐Term Exposure to Low‐Power 915 MHz Unmodulated Radiation on Phaseolus vulgaris L.

Effects of Long‐Term Exposure to Low‐Power 915 MHz Unmodulated Radiation on Phaseolus vulgaris L.

Effect of Biostimulants on Several Physiological Characteristics and Chlorophyll Content in Broccoli under Drought Stress and Re-watering

Physiological characterization, transcriptomic profiling, and microsatellite marker mining of Lycium ruthenicum

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