scholarly journals Alternating Red/Blue Light Increases Leaf Thickness and Mesophyll Cell Density in the Early Growth Stage, Improving Photosynthesis and Plant Growth in Lettuce

2021 ◽  
Vol 59 (2) ◽  
pp. 59-67
Author(s):  
Noriko OHTAKE ◽  
Yao JU ◽  
Masaharu ISHIKURA ◽  
Hiroshi SUZUKI ◽  
Shunsuke ADACHI ◽  
...  
Keyword(s):  
Plant Growth ◽  
Cell Density ◽  
Blue Light ◽  
Growth Stage ◽  
Mesophyll Cell ◽  
Early Growth ◽  
Leaf Thickness ◽  
Early Growth Stage

scholarly journals Early Growth Stage Root-Associated Endophytes Isolated From Ulex Europaeus L. (Fabaceae) Colonizing Rural Areas in South-Central Chile

2021 ◽  
Author(s):  
Hector Herrera ◽  
Alejandra Fuentes ◽  
Javier Ortiz ◽  
Javiera Soto ◽  
Rafael Vorges Da-Silva Valadares ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Stage ◽  
Early Growth ◽  
Central Chile ◽  
Early Growth Stage ◽  
Ulex Europaeus ◽  
South Central ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Plant Growth Promoting Traits

Abstract Background and aimsUlex europaeus L. (Fabaceae), commonly known as gorse, is an invasive woody shrub that easily grows in several locations across the world. However, little is known about the interactions of this invasive species with soil microorganisms and how these microbes can promote reaching rapid grow-rates at early stages of development. We aim at characterizing the endophytic fungal and bacterial microbiota associated with roots of early growth stage U. europaeus colonizing native ecosystems in south-central Chile.MethodsRoot-associated microorganisms were isolated and identified using standard molecular techniques. Furthermore, plant growth-promoting traits were studied and biocontrol activity was assessed to characterize the early growth stage root-associated taxa. ResultsFour endophytic fungi belonging to Sordariomycetes and twelve bacteria assigned to Proteobacteria and Actinobacteria were identified as the principal early growth stage root-endophytic taxa. Plant growth-promoting traits were detected in several isolates such as Fusarium acuminatum and Rhodococcus sp. Besides, some of the isolates such as Rhodococcus sp. and Purpureocillium lilacinum showed biocontrol potential against phytopathogenic fungi. ConclusionsOur results demonstrate that early growth stage root endophytic taxa associated with U. europaeus have beneficial plant growth-promoting traits that can contribute with the rapid growth-rates of the shrub. The interaction with a set of beneficial microorganisms is an additional mechanism to explain the ability of U. europaeus for colonizing in various ecosystems.

Gibberellic Acid and Salinity Affected Growth and Antioxidant Enzyme Activities in Castor Bean Plants at Early Growth Stage

2014 ◽  
Vol 106 (4) ◽  
pp. 1340-1348 ◽  
Author(s):  
Guisheng Zhou ◽  
Nimir Nimir ◽  
Shiyuan Lu ◽  
Fuyan Zhai ◽  
Yonghui Wang
Keyword(s):  
Gibberellic Acid ◽  
Antioxidant Enzyme ◽  
Enzyme Activities ◽  
Castor Bean ◽  
Growth Stage ◽  
Early Growth ◽  
Antioxidant Enzyme Activities ◽  
Early Growth Stage ◽  
Bean Plants

scholarly journals Dynamics study of the adsorption and diffusion in early growth stage of AlN/α-Al2Ｏ3（0001） films

2009 ◽  
Vol 58 (5) ◽  
pp. 3553
Author(s):  
Yang Chun ◽  
Feng Yu Fang ◽  
Yu Yi
Keyword(s):  
Growth Stage ◽  
Early Growth ◽  
Early Growth Stage ◽  
Α Al2o3 ◽  
And Diffusion

scholarly journals Temporal Dynamics of Microcystins In Two Reservoirs With Different Trophic Status During The Early Growth Stage of Cyanobacteria

2021 ◽  
Author(s):  
Qingju Xue ◽  
Ming Kong ◽  
Liqiang Xie ◽  
Tong Li ◽  
Mengna Liao ◽  
...  
Keyword(s):  
Growth Stage ◽  
Trophic Status ◽  
Temporal Dynamics ◽  
Influence Factors ◽  
Environmental Parameters ◽  
Early Growth ◽  
Cyanobacterial Blooms ◽  
Organic Matters ◽  
Early Growth Stage ◽  
Density And Biomass

Abstract Harmful cyanobacterial blooms are increasing in frequency and severity, which makes their toxic secondary metabolites of microcystins (MCs) have been widely studied, especially in their distribution and influence factors in different habitats. However, the distribution of MCs on the early growth stage of harmful cyanobacteria and its influence factors and risks are still largely unknown. Thus, in the present study, two reservoirs (Lutian Reservoir and Lake Haitang) with different trophic status in China have been studied weekly from March to May in 2018, when the cyanobacteria communities were just in the early growth stage, to investigate the variation of MCs concentration and the relationships between MCs and environmental parameters. During the investigation, Lutian Reservoir and Lake Haitang were found to be mesotrophic and light eutrophic, respectively. In Lutian Reservoir, the concentration of EMCs was obviously higher than that of IMCs with a mean value of 0.323 and 0.264 μg/L, respectively. Meanwhile, the concentration of EMCs also fluctuated more sharply than that of IMCs. Congeners of IMC-YR and EMC-LR were respectively dominant in total concentrations of IMCs and EMCs. Unsurprisingly, in Lake Haitang, the concentrations of IMC and EMC were both significantly higher than that in Lutian Reservoir with a mean concentration of 0.482 and 0.472 μg/L, respectively. Differently, the concentration of MC-YR was dominant in both IMCs and EMCs, followed by MC-LR. In correlation analysis, the IMCs were significantly and positively correlated with the density and biomass of phytoplankton phyla and potential MCs-producing cyanobacteria and the parameters of water temperature (WT), nutrients and organic matters. Similar results were also observed for EMCs. While the different variation of MCs in two reservoirs might be primarily caused by the differences in WT, nutrients (especially phosphorus), organic matters and the composition of MCs-producing cyanobacteria. In addition, the coexistence of the dominant species of Pseudoanabaena sp., which can produce taste-and-odor compound of 2-methylisoborneol (2-MIB), might have significant impacts on the concentration and toxicity of MCs. Our results suggested that the risks posed by MCs at the early growth stage of cyanobacteria should also deserve our attentions, especially in mesotrophic water bodies.

scholarly journals Growth, Development, and Chemical Constituents of Edible Ice Plant (Mesembryanthemum crystallinum L.) Produced under Combinations of Light-emitting Diode Lights

HortScience ◽  
2018 ◽  
Vol 53 (6) ◽  
pp. 865-874 ◽  
Author(s):  
Thitipat Weeplian ◽  
Tsair-Bor Yen ◽  
Yunn-Shy Ho
Keyword(s):  
Vegetative Growth ◽  
Growth Stage ◽  
Chemical Constituents ◽  
Early Growth ◽  
Mesembryanthemum Crystallinum ◽  
Light Spectrum ◽  
Light Emitting ◽  
Early Growth Stage ◽  
Light Spectra ◽  
Late Growth

To investigate the effects of light treatments on the growth morphology and chemical constituents of Mesembryanthemum crystallinum L. plants, red (R), blue (B), far red (Fr), and white (W) light-emitting diodes (LEDs) were configured to provide different combinations of light spectra and photosynthetic photon flux densities (PPFDs). In Expt. 1, five light spectra of red/white (RW), red/white/far red (RWFr), red/white/high-intensity far red (RWFrD), red/blue (RB), and red/blue/far red (RBFr) were set up in two 3-layered racks with circulating hydroponic systems. In each light spectrum treatment, the distance between the LED lamps and the transplanting board was regulated to provide low PPFD and high PPFD treatments. In Expt. 2, the effect of Fr was further investigated in plants in the early and late growth stages. RWFr light was modified by covering the Fr lamps to become red/white without far red (RW−Fr) light during the early growth stage, and then removing the covers to provide the Fr spectrum red/white with far red (RW+Fr) during the later growth stage. This study suggested that high PPFD was not beneficial for promoting plant growth in any light spectrum treatment. Among light spectrum treatments at a PPFD of 215 ± 15 μmol·m−2·s−1, RW light produced higher vegetative growth. In the late growth stage, RW and RB combined with Fr light promoted reproductive growth, antioxidant activities, and secondary compounds, such as phenolic compounds, pinitol accumulation, and betacyanins. Therefore, RW (227 μmol·m−2·s−1), RW−Fr (162 μmol·m−2·s−1), and RB (162 μmol·m−2·s−1) are suggested for the early growth stage to promote vegetative growth. Then additional Fr light can be applied in addition to RW for secondary metabolite induction in the late growth stage.

scholarly journals Exploitation of variability for salinity tolerance in maize hybrids (Zea mays L.) at early growth stage

2016 ◽  
Vol 11 (42) ◽  
pp. 4206-4213 ◽  
Author(s):  
Qayyum Abdul ◽  
Muhammad Saeed Hafiz ◽  
Hanif Mamoona ◽  
Noor Etrat ◽  
Malik Waqas ◽  
...  
Keyword(s):  
Zea Mays ◽  
Salinity Tolerance ◽  
Growth Stage ◽  
Zea Mays L ◽  
Early Growth ◽  
Early Growth Stage ◽  
Maize Hybrids
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