scholarly journals Methanogenic Archaea dominate mature heartwood habitats of Eastern Cottonwood (Populus deltoides)

2018 ◽  
Vol 222 (1) ◽  
pp. 115-121 ◽  
Author(s):  
Daniel Z. Yip ◽  
Allison M. Veach ◽  
Zamin K. Yang ◽  
Melissa A. Cregger ◽  
Christopher W. Schadt
Keyword(s):  
Populus Deltoides ◽  
Methanogenic Archaea ◽  
Eastern Cottonwood

A Growth and Yield Model for Improved Eastern Cottonwood Plantations in the Lower Mississippi Delta

1991 ◽  
Vol 15 (4) ◽  
pp. 213-216 ◽  
Author(s):  
Quang V. Cao ◽  
Kenneth M. Durand
Keyword(s):  
Populus Deltoides ◽  
Mississippi Delta ◽  
Basal Area ◽  
Site Index ◽  
Growth And Yield ◽  
Annual Increment ◽  
Yield Model ◽  
Eastern Cottonwood ◽  
Volume Yield ◽  
Growth And Yield Model

Abstract A compatible growth and yield model was developed based on remeasurement data collected from 183 plots on unthinned improved eastern cottonwood (Populus deltoides Bartr.) plantations in the lower Mississippi Delta. The Sullivan and Clutter (1972) equation form was selected for predicting cubic-foot volume yield and projecting volume from site index and initial age and basal area. Yield equations explained 97% and 94%, respectively, of the variations in total outside bark and merchantable inside bark volumes. Mean annual increment of merchantable volume culminated between 8 and 15 years, depending on site index and initial basal area. South. J. Appl. For. 15(4):213-216.

The effect of ozone on cottonwood – leaf rust interactions: independence of abiotic stress, genotype, and leaf ontogeny

1987 ◽  
Vol 65 (5) ◽  
pp. 949-953 ◽  
Author(s):  
James S. Coleman ◽  
Clive G. Jones ◽  
William H. Smith
Keyword(s):  
Leaf Rust ◽  
Populus Deltoides ◽  
Leaf Age ◽  
Leaf Length ◽  
Ozone Treatment ◽  
Shoot Biomass ◽  
Leaf Ontogeny ◽  
Leaf Production ◽  
Leaf Injury ◽  
Eastern Cottonwood

The interaction of an acute ozone dose, plant genotype, and leaf ontogeny on the development of cottonwood leaf rust on eastern cottonwood (Populus deltoides Bartr.) was investigated. A rust-resistant (ST 66) and a rust-susceptible (ST 109) clone were exposed to charcoal-filtered air or were fumigated with 393 μg m−3 (0.20 ppm) ozone for 5 h. Forty hours after fumigation, leaf material of different developmental ages was inoculated with urediospores of Melampsora medusae Thum., and uredia production was measured after 10 days. Ozone fumigation of cottonwoods significantly reduced uredia production by M. medusae on both clones and all leaf ages without causing visible leaf injury or measurable changes in cottonwood height growth, leaf production, leaf length, or root/shoot biomass. Uredia production was strongly affected by ozone treatment, cottonwood genotype, and leaf age, but interactions among these three factors did not occur.

scholarly journals LuxR- and LuxI-Type Quorum-Sensing Circuits Are Prevalent in Members of the Populus deltoides Microbiome

2013 ◽  
Vol 79 (18) ◽  
pp. 5745-5752 ◽  
Author(s):  
Amy L. Schaefer ◽  
Colin R. Lappala ◽  
Ryan P. Morlen ◽  
Dale A. Pelletier ◽  
Tse-Yuan S. Lu ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Populus Deltoides ◽  
Cell Communication ◽  
Homoserine Lactone ◽  
Bacterial Isolates ◽  
Content Type ◽  
Eastern Cottonwood ◽  
Bacterial Signaling ◽  
Signal Production ◽  
Plant Signals

ABSTRACTWe are interested in the root microbiome of the fast-growing Eastern cottonwood tree,Populus deltoides. There is a large bank of bacterial isolates fromP. deltoides, and there are 44 draft genomes of bacterial endophyte and rhizosphere isolates. As a first step in efforts to understand the roles of bacterial communication and plant-bacterial signaling inP. deltoides, we focused on the prevalence of acyl-homoserine lactone (AHL) quorum-sensing-signal production and reception in members of theP. deltoidesmicrobiome. We screened 129 bacterial isolates for AHL production using a broad-spectrum bioassay that responds to many but not all AHLs, and we queried the available genome sequences of microbiome isolates for homologs of AHL synthase and receptor genes. AHL signal production was detected in 40% of 129 strains tested. Positive isolates included members of theAlpha-,Beta-, andGammaproteobacteria. Members of theluxIfamily of AHL synthases were identified in 18 of 39 proteobacterial genomes, including genomes of some isolates that tested negative in the bioassay. Members of theluxRfamily of transcription factors, which includes AHL-responsive factors, were more abundant thanluxIhomologs. There were 72 in the 39 proteobacterial genomes. Some of theluxRhomologs appear to be members of a subfamily of LuxRs that respond to as-yet-unknown plant signals rather than bacterial AHLs. Apparently, there is a substantial capacity for AHL cell-to-cell communication in proteobacteria of theP. deltoidesmicrobiota, and there are alsoProteobacteriawith LuxR homologs of the type hypothesized to respond to plant signals or cues.

Growth and Survival of Eastern Cottonwood in Kentucky

1987 ◽  
Vol 11 (2) ◽  
pp. 73-76 ◽  
Author(s):  
J. W. Stringer ◽  
L. Shain ◽  
R. F. Wittwer
Keyword(s):  
Populus Deltoides ◽  
Early Growth ◽  
Height Growth ◽  
Growth And Survival ◽  
Eastern Cottonwood ◽  
Survival Percentage ◽  
Stem Cankers ◽  
Geographic Sources ◽  
Superior Clones

Abstract Nine clones of eastern cottonwood (Populus deltoides Bartr.) from different geographic sources were grown on two sites for height growth and survival percentage after 5 to 10 years. Several clones ranked as superior in Mississippi also performed well during the first 5 years of growthin Kentucky. The survival and diameter growth of some of these "superior" clones, however, was significantly less than others at 10 years. These same clones also exhibited low crown vigor and an abundance of stem cankers associated largely with Fusarium solani. Early growth induces must thereforebe used cautiously for determining long-term planting schedules. South. J. Appl. For. 11(2):73-76.

Tolerance of Planed Hardwoods to Spring Flooding

1977 ◽  
Vol 1 (3) ◽  
pp. 23-25 ◽  
Author(s):  
James B. Baker
Keyword(s):  
Populus Deltoides ◽  
Growing Season ◽  
Liquidambar Styraciflua ◽  
Fraxinus Pennsylvanica ◽  
Green Ash ◽  
Nyssa Aquatica ◽  
Eastern Cottonwood ◽  
Platanus Occidentalis ◽  
Water Tupelo ◽  
Root Collar

Abstract Cuttings of eastern cottonwood (Populus deltoides) and seedlings of sweetgum (Liquidambar styraciflua), water tupelo (Nyssa aquatica), American sycamore (Platanus occidentalis), and green ash (Fraxinus pennsylvanica) were planted on a slackwater clay (Vertic Haplaquept) in western Mississippi in two consecutive years and inundated soon after foliation. During each of the two years, survival following flooding was consistently high for water tupelo, green ash, and sycamore, low for cottonwood, and intermediate for sweetgum. With the exception of green ash, however, all species lost their leaves and died back to the root collar during flooding. Thus trees, other than ash, that were living at the end of the growing season had originated from root collar sprouts.

scholarly journals Draft Genome Sequence of Larkinella sp. Strain BK230, Isolated from Populus deltoides Roots

2020 ◽  
Vol 9 (12) ◽  
Author(s):  
Dale A. Pelletier ◽  
Leah H. Burdick ◽  
Mircea Podar ◽  
Christopher W. Schadt ◽  
Udaya C. Kalluri
Keyword(s):  
Genome Sequence ◽  
Populus Deltoides ◽  
Heterotrophic Bacterium ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Trna Genes ◽  
Coding Sequences ◽  
Content Type ◽  
Eastern Cottonwood

Larkinella sp. strain BK230, a heterotrophic bacterium of the phylum Bacteroidetes, was isolated from the roots of a field-grown eastern cottonwood tree (Populus deltoides) located in Georgia. The draft 7.27-Mb genome has a G+C content of 53.4% and contains 6,026 coding sequences, including 41 tRNA genes.

Abscisic acid content and components of water status in leaves of Populus deltoides

1986 ◽  
Vol 64 (10) ◽  
pp. 2295-2298 ◽  
Author(s):  
Tsai-Yun Lin ◽  
Edward Sucoff ◽  
Mark Brenner
Keyword(s):  
Abscisic Acid ◽  
Populus Deltoides ◽  
Water Status ◽  
Leaf Water ◽  
Leaf Water Status ◽  
Eastern Cottonwood ◽  
Detached Leaves ◽  
Aba Content ◽  
The Relationship ◽  
Abscisic Acid Content

The relationship between abscisic acid (ABA) and leaf water status was studied during the air drying of detached leaves of eastern cottonwood (Populus deltoides Marsh.). The ABA content increased exponentially as leaf water potential and leaf turgor potential decreased. No clearly defined thresholds were observed between ABA content and these variables. ABA content was linearly related to the relative fresh weight and was not related to the osmotic potential.

The influence of alternative plant propagation and stand establishment techniques on survival and growth of eastern cottonwood (Populus deltoides Bartr.) clones

New Forests ◽  
2014 ◽  
Vol 45 (4) ◽  
pp. 487-506 ◽  
Author(s):  
Donald J. Kaczmarek ◽  
Randall J. Rousseau ◽  
Jeff A. Wright ◽  
Brian C. Wachelka
Keyword(s):  
Populus Deltoides ◽  
Plant Propagation ◽  
Stand Establishment ◽  
Eastern Cottonwood ◽  
Survival And Growth
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