scholarly journals High root biomass production in anchoredArabidopsisplants grown in axenic sucrose supplemented liquid culture

BioTechniques ◽  
2005 ◽  
Vol 39 (3) ◽  
pp. 345-349 ◽  
Author(s):  
Marie-France Hétu ◽  
Linda J. Tremblay ◽  
Daniel D. Lefebvre
Keyword(s):  
Biomass Production ◽  
Root Biomass ◽  
Liquid Culture

scholarly journals Selenium supply affects chlorophyll concentration and biomass production of maize (Zea mays L.)

2018 ◽  
Vol 69 (4) ◽  
pp. 249-255
Author(s):  
Aliu Sali ◽  
Dukagjin Zeka ◽  
Shukri Fetahu ◽  
Imer Rusinovci ◽  
Hans-Peter Kaul
Keyword(s):  
Biomass Production ◽  
Root Biomass ◽  
Zea Mays L ◽  
Chlorophyll Concentration ◽  
Total Chlorophyll ◽  
Chl A ◽  
Maize Population ◽  
Maize Genotypes ◽  
Positive Effect ◽  
Shoot And Root Biomass

Summary The objective of this work was to investigate the effect of selenium (Se) on the biomass production and the contents of photosynthetically active pigments. The pot experiment included two maize genotypes: hybrid 408BC originating from Croatia and a local maize population from Kosovo. The doses of Se applied were 0, 1.30, 6.57, 13, and 26 mg kg−1. The lowest Se dose (1.30 mg Se kg−1) had a positive effect on shoot and root biomass production as well as on the contents of chlorophyll b (Chl-b), total chlorophyll, and carotenoids (just for the hybrid). Chlorophyll a (Chl-a) was reduced with increasing Se doses, whereas chlorophyll b (Chl-b) and total chlorophyll further increased with medium Se doses. The highest Se dose strongly reduced biomass and the contents of photosynthetically active pigments. Chl-a and carotenoids positively correlated with shoot (for both genotypes) and root (for the hybrid) biomass, whereas no correlation was observed between Chl-b and biomass. Low amounts of Se application are favorable for biomass production and chlorophyll and carotenoids contents, whereas high amounts of Se application negatively affect both.

scholarly journals Effects of water deficit on growth and physiology of young Conocarpus erectus L. and Ficus benjamina L. Saplings

2019 ◽  
Vol 48 (4) ◽  
pp. 1215-1221
Author(s):  
Zikria Zafar ◽  
Fahad Rasheed ◽  
Muhammad Abdullah ◽  
Mir Md Abdus Salam ◽  
Muhammad Mohsin
Keyword(s):  
Water Deficit ◽  
Biomass Production ◽  
Root Biomass ◽  
Growth Parameters ◽  
Co2 Assimilation ◽  
Total Biomass ◽  
Assimilation Rate ◽  
Ficus Benjamina ◽  
Co2 Assimilation Rate ◽  
Conocarpus Erectus

A greenhouse experiment was conducted to investigate the effects of water deficit on growth and physiological parameters of Ficus benjamina and Conocarpus erectus. The results revealed that all growth parameters such as plant height, stem diameter, no. of leaves, no. of branches and chlorophyll contents significantly decreased under water deficit condition. Interestingly, although leaf, stem and total biomass production and allocation decreased significantly under water deficit, but root biomass production and allocation increased significantly. Similarly, stomatal conductance to water vapor decreased significantly and CO2 assimilation rate remained similar to control under water deficit condition. Resultantly, a significant increase in water use efficiency was evident in both species under water deficit condition. These results suggested that, in spite of a significant decrease in biomass production, young Conocarpus erectus and Ficus benjamina can tolerate water deficit which is due to sustained CO2 assimilation rate and increase in root biomass.

Metal insensitivity in ericoid mycorrhizal endophytes from Woollsia pungens (Epacridaceae)

2001 ◽  
Vol 49 (5) ◽  
pp. 571 ◽  
Author(s):  
John W. G. Cairney ◽  
Darryl M. van Leerdam ◽  
David M. Chen
Keyword(s):  
Northern Hemisphere ◽  
Intraspecific Variation ◽  
Biomass Production ◽  
Toxic Metals ◽  
Liquid Culture ◽  
Effective Concentration ◽  
Order Of Magnitude ◽  
Woollsia Pungens

The influence of Cd2+, Cu2+ and Zn2+ on biomass production by 13 ericoid mycorrhizal endophytes (all putative Leotiales ascomycetes) from Woollsia pungens (Epacridaceae), along with three isolates of Hymenoscyphus spp., was investigated in axenic liquid culture. Inter- and intraspecific variation was observed in effective concentration values that inhibited growth by 50% (EC50) for each metal; however, values varied by only a single order of magnitude for a particular metal (16.67–261.00 mmol m–3 for Zn2+, 2.50–12.33 mmol m–3 for Cd2+ and 3.00–43.88 mmol m-3for Cu2+). Values of EC50 for the endophytes from W. pungens were thus broadly similar to those from H. ericae. Combined metal treatments had either additive or ameliorative effects on the toxicity of individual metals to the various isolates. The data suggest that resistance to toxic metals is broadly similar in ericoid mycorrhizal endophytes from Northern Hemisphere Ericaceae and Australian Epacridaceae.

scholarly journals Shoot and root biomass production in semi-arid shrublands exposed to long-term experimental N input

2021 ◽  
Vol 754 ◽  
pp. 142204
Author(s):  
George L. Vourlitis ◽  
Jeff Jaureguy ◽  
Leticia Marin ◽  
Charlton Rodriguez
Keyword(s):  
Biomass Production ◽  
Root Biomass ◽  
Arid Shrublands ◽  
N Input ◽  
Semi Arid ◽  
Shoot And Root Biomass

Quantifying shoot and root biomass production and soil carbon under perennial bioenergy grasses in a subtropical environment

2019 ◽  
Vol 128 ◽  
pp. 105323 ◽  
Author(s):  
Xi Liang ◽  
John E. Erickson ◽  
Maria L. Silveira ◽  
Lynn E. Sollenberger ◽  
Diane L. Rowland ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Biomass Production ◽  
Root Biomass ◽  
Bioenergy Grasses ◽  
Shoot And Root Biomass ◽  
Subtropical Environment

Long-term variability of root production in bioenergy crops from ingrowth core measurements

2021 ◽  
Author(s):  
Cheyenne Lei ◽  
Michael Abraha ◽  
Jiquan Chen ◽  
Yahn-Jauh Su
Keyword(s):  
Land Use ◽  
Biomass Production ◽  
Root Biomass ◽  
Biomass Productivity ◽  
Biomass Accumulation ◽  
Biofuel Production ◽  
Growing Season Length ◽  
Ingrowth Core ◽  
Biofuel Crops

Abstract Aims Long-term determination of root biomass production upon land use conversion to biofuel crops is rare. To assess land-use legacy influences on belowground biomass accumulation, we converted 22-year-old Conservation Reserve Program (CRP) grasslands and 50+-year-old agricultural (AGR) lands to corn (C), switchgrass (Sw) and restored prairie (Pr) biofuel crops. We maintained one CRP grassland as a reference (Ref). We hypothesized that land use history and crop type have significant effects on root density, with perennial crops on CRP grasslands having a higher root biomass productivity, while corn grown on former agricultural lands produce the lowest root biomass. Methods The ingrowth core method was used to determine in situ ingrowth root biomass, alongside measurements of aboveground net primary productivity (ANPP). Ancillary measurements, including air temperature, growing season length, and precipitation were used to examine their influences on root biomass production. Important Findings Root biomass productivity was the highest in unconverted CRP grassland (1716 g m -2 yr -1), and lowest in corn fields (526 g m -2 yr -1). All perennial sites converted from CRP and AGR lands had lower root biomass and ANPP in the first year of planting but peaked in 2011 for switchgrass and a year later for restored prairies. Ecosystem stability was higher in restored prairies (AGR-Pr: 4.3 ± 0.11; CRP-Pr: 4.1 ± 0.10), with all monocultures exhibiting a lower stability. Root biomass production was positively related to ANPP (R  2 = 0.40). Overall, attention should be given to root biomass accumulation in large-scale biofuel production as it is a major source of carbon sequestration.

scholarly journals Time of exposure and oil dosage affecting biomass production of the Amazonian semi-aquatic grass Echinochloa polystachya

Rodriguésia ◽  
2011 ◽  
Vol 62 (4) ◽  
pp. 901-907 ◽  
Author(s):  
Aline Lopes ◽  
Maria Teresa Fernandez Piedade
Keyword(s):  
Crude Oil ◽  
Biomass Production ◽  
Oil Spill ◽  
Root Biomass ◽  
Leaf Length ◽  
Plant Population ◽  
Total Biomass ◽  
Number Of Leaves ◽  
Echinochloa Polystachya ◽  
Exposition Time

Abstract The effects of Urucu crude oil on growth and biomass production of Echinochloa polystachya were studied experimentally. Young plants contaminated with 5 oil doses (0 to 2.64 l.m-2) were monitored at 1, 5, 10, 15 and 20 days after exposure. A significant reduction was observed in leaf humidity and the ratio of live aerial/ total biomass related to the increase in oil dosage. Increased exposition time caused a reduction in the number of leaves, aerial biomass, proportion of live aerial/total biomass, total biomass, and an increase of dead aerial biomass. However, root biomass and leaf length were not affected by exposure to oil. The low tolerance of E. polystachya to Urucu crude oil has lead to the mortality of 90% of the plant population in 20 days at the 2.64 l treatment. The death of young individuals of E. polystachya by relatively low dosages of Urucu oil indicates that, in the case of an oil spill in the Amazon varzea, this species would be severely affected, endangering, consequently, the entire environment.

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