Developing xylem-preferential expression ofPdGA20ox1, a gibberellin 20-oxidase 1 fromPinus densiflora, improves woody biomass production in a hybrid poplar

2015 ◽  
Vol 14 (4) ◽  
pp. 1161-1170 ◽  
Author(s):  
Hyung-Woo Jeon ◽  
Jin-Seong Cho ◽  
Eung-Jun Park ◽  
Kyung-Hwan Han ◽  
Young-Im Choi ◽  
...  
Keyword(s):  
Biomass Production ◽  
Hybrid Poplar ◽  
Woody Biomass ◽  
Preferential Expression

scholarly journals High productivity in hybrid-poplar plantations without isoprene emission to the atmosphere

2020 ◽  
Vol 117 (3) ◽  
pp. 1596-1605 ◽  
Author(s):  
Russell K. Monson ◽  
Barbro Winkler ◽  
Todd N. Rosenstiel ◽  
Katja Block ◽  
Juliane Merl-Pham ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Biomass Production ◽  
Hybrid Poplar ◽  
Woody Biomass ◽  
Ozone Production ◽  
Tree Plantations ◽  
Emission Rates ◽  
Metabolic Dysfunction ◽  
High Productivity ◽  
Isoprene Emission

Hybrid-poplar tree plantations provide a source for biofuel and biomass, but they also increase forest isoprene emissions. The consequences of increased isoprene emissions include higher rates of tropospheric ozone production, increases in the lifetime of methane, and increases in atmospheric aerosol production, all of which affect the global energy budget and/or lead to the degradation of air quality. Using RNA interference (RNAi) to suppress isoprene emission, we show that this trait, which is thought to be required for the tolerance of abiotic stress, is not required for high rates of photosynthesis and woody biomass production in the agroforest plantation environment, even in areas with high levels of climatic stress. Biomass production over 4 y in plantations in Arizona and Oregon was similar among genetic lines that emitted or did not emit significant amounts of isoprene. Lines that had substantially reduced isoprene emission rates also showed decreases in flavonol pigments, which reduce oxidative damage during extremes of abiotic stress, a pattern that would be expected to amplify metabolic dysfunction in the absence of isoprene production in stress-prone climate regimes. However, compensatory increases in the expression of other proteomic components, especially those associated with the production of protective compounds, such as carotenoids and terpenoids, and the fact that most biomass is produced prior to the hottest and driest part of the growing season explain the observed pattern of high biomass production with low isoprene emission. Our results show that it is possible to reduce the deleterious influences of isoprene on the atmosphere, while sustaining woody biomass production in temperate agroforest plantations.

scholarly journals Energy performances of intensive and extensive short rotation cropping systems for woody biomass production in the EU

2015 ◽  
Vol 41 ◽  
pp. 845-854 ◽  
Author(s):  
S. Njakou Djomo ◽  
A. Ac ◽  
T. Zenone ◽  
T. De Groote ◽  
S. Bergante ◽  
...  
Keyword(s):  
Biomass Production ◽  
Cropping Systems ◽  
Woody Biomass ◽  
Short Rotation ◽  
The Eu

scholarly journals A general integrative framework for modelling woody biomass production and carbon sequestration rates in forests

2011 ◽  
Vol 100 (1) ◽  
pp. 42-64 ◽  
Author(s):  
David A. Coomes ◽  
Robert J. Holdaway ◽  
Richard K. Kobe ◽  
Emily R. Lines ◽  
Robert B. Allen
Keyword(s):  
Carbon Sequestration ◽  
Biomass Production ◽  
Woody Biomass ◽  
Integrative Framework

A Model for the Economic Evaluation of Plantation Biomass Production for Co-firing with Coal in Electricity Production

1999 ◽  
Vol 28 (1) ◽  
pp. 106-117 ◽  
Author(s):  
Sara Nienow ◽  
Kevin T. McNamara ◽  
Andrew R. Gillespie ◽  
Paul V. Preckel
Keyword(s):  
Power Plant ◽  
Biomass Production ◽  
Cost Effective ◽  
Woody Biomass ◽  
Electricity Production ◽  
Variable Cost ◽  
Public And Private ◽  
Capital Costs ◽  
Fuel Blending ◽  
Ash Disposal

Public and private electric utilities are considering co-firing biomass with coal as a strategy to reduce the levels of CO2, SO2 and NOx in stack emissions, as well as a response to state legislative mandates requiring the use of renewable fuels. This analysis examines the conditions under which biomass co-firing is economically feasible for utilities and woody biomass producers and describes additional environmental and community benefits associated with biomass use. This paper presents a case study of woody biomass production and co-firing at the Northern Indiana Public Service Company (NIPSCO) Michigan City Unit No. 12 power plant. A Salix (willow) production budget was created to assess the feasibility of plantation tree production to supply biomass to the utility for fuel blending. A GAMS model was developed to examine the optimal co-firing blend of coal and biomass while minimizing variable cost, including the cost of ash disposal and material procurement costs. The model is constrained by the levels of pollution produced. This model is used to examine situations where coal is the primary fuel and waste wood, willow trees, or both are available for fuel blending. Capital costs for co-firing were estimated outside of the model and are incorporated into the total cost of co-firing. The results indicate that under certain circumstances it is cost-effective for the power plant to co-fire biomass. Sensitivity analysis is used to test biomass price sensitivity and explores the effects of potential public policies on co-firing.

Water relations, photosynthetic capacity, and root/shoot partitioning of photosynthate as determinants of productivity in hybrid poplar

1989 ◽  
Vol 67 (6) ◽  
pp. 1689-1697 ◽  
Author(s):  
T. J. Tschaplinski ◽  
T. J. Blake
Keyword(s):  
Net Photosynthetic Rate ◽  
Biomass Production ◽  
Photosynthetic Rate ◽  
Populus Deltoides ◽  
Hybrid Poplar ◽  
Net Photosynthesis ◽  
Unit Leaf ◽  
Vigorous Growth ◽  
The Difference ◽  
Causal Sequence

Physiological determinants of productivity, including net photosynthesis, root/shoot partitioning of photosynthate, and leaf retention were investigated for three Populus deltoides Bartr. × nigra L. (DN 2, DN 22, DN 15) and two P. balsamifera L. × deltoides Bartr. (Jackii 4, Jackii 7) hybrids. Performance of the different hybrids was compared under controlled greenhouse conditions and in the field. There was a 2.4-fold difference in biomass production between the faster growing DN 2 and the slower growing DN 15 after 100 days growth in the greenhouse, and a 1.5-fold difference after the 1st year's growth in the field. When coppice regrowth of the two Jackii hybrids was compared after 143 days under field conditions, the biomass production of Jackii 4 was 2.2 times that of Jackii 7 and net photosynthetic rate per unit leaf area was 50 % higher than that of Jackii 7 over most of the summer. Many physiological and morphological factors contributed to the more vigorous growth of coppice DN 2 and Jackii 4. These included vigorous initial root growth relative to shoot growth, the ability to maintain higher xylem pressure potentials, net photosynthetic rate, and transpiration rate. These factors may have delayed leaf senescence and late-season photosynthetic decline of older leaves until later in the growing season. The possible causal sequence of physiological events contributing to the difference in productivity and the use of these factors for the early selection of productive hybrids or genotypes are discussed.

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