scholarly journals The contribution of pathogenic soil microbes to ring formation in an iconic Australian arid grass, Triodia basedowii (Poaceae)

2021 ◽  
Author(s):  
Neil D. Ross ◽  
Angela T. Moles
Keyword(s):  
Soil Microbes ◽  
Ring Formation

Butenolide ring formation in cardenolide biosynthesis: Spontaneous cyclization of pregnane-21-O-malonyl hemiesters

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
RM Pádua ◽  
R Waibel ◽  
SP Kuate ◽  
PK Riedl ◽  
P Gmeiner ◽  
...  
Keyword(s):  
Ring Formation

Characteristics of aquatic plant roots, soil microbes and agricultural non-point source pollutant mitigation in riparian buffer zones

2010 ◽  
Vol 18 (2) ◽  
pp. 365-370
Author(s):  
Shui-Hong YAO ◽  
Yan-Qing LIU ◽  
Qing-Hai WANG ◽  
Bo XIAO ◽  
Dian-Li SONG
Keyword(s):  
Point Source ◽  
Aquatic Plant ◽  
Soil Microbes ◽  
Riparian Buffer ◽  
Plant Roots ◽  
Buffer Zones ◽  
Riparian Buffer Zones

Δα,β-Butenolides [Furan-2(5H)-ones]: Ring Construction Approaches and Biological Aspects - A Mini-Review

2020 ◽  
Vol 17 (8) ◽  
pp. 922-945
Author(s):  
Andrés-Felipe Villamizar-Mogotocoro ◽  
Andrés-Felipe León-Rojas ◽  
Juan-Manuel Urbina-González
Keyword(s):  
Biological Activities ◽  
Ring Formation ◽  
High Interest ◽  
The Past ◽  
Biological Aspects ◽  
Synthetic Methodologies ◽  
New Procedures

The five-membered oxacyclic system of furan-2(5H)-ones, commonly named as γ- butenolides or appropriately as Δα,β-butenolides, is of high interest since many studies have proven its bioactivity. During the past few years, Δα,β-butenolides have been important synthetic targets, with several reports of new procedures for their construction. A short compendium of the main different synthetic methodologies focused on the Δα,β-butenolide ring formation, along with selected examples of compounds with relevant biological activities of these promising pharmaceutical entities is presented.

scholarly journals Multicellular Ring Formation in Dictyostelium discoieum

1999 ◽  
Vol 39 (supplement) ◽  
pp. S40 ◽  
Author(s):  
T. Mizuno ◽  
K. Yoshioka ◽  
Y. Sato ◽  
H. Yokoi ◽  
M. Takita ◽  
...  
Keyword(s):  
Ring Formation

scholarly journals Disentangling the Legacies of Climate and Management on Tree Growth

Ecosystems ◽  
2021 ◽  
Author(s):  
Laura Marqués ◽  
Drew M. P. Peltier ◽  
J. Julio Camarero ◽  
Miguel A. Zavala ◽  
Jaime Madrigal-González ◽  
...  
Keyword(s):  
Climate Change ◽  
Forest Management ◽  
Tree Growth ◽  
European Beech ◽  
Ring Formation ◽  
Silver Fir ◽  
Past Climate ◽  
Climate Conditions ◽  
Ecological Memory ◽  
Historical Forest

AbstractLegacies of past climate conditions and historical management govern forest productivity and tree growth. Understanding how these processes interact and the timescales over which they influence tree growth is critical to assess forest vulnerability to climate change. Yet, few studies address this issue, likely because integrated long-term records of both growth and forest management are uncommon. We applied the stochastic antecedent modelling (SAM) framework to annual tree-ring widths from mixed forests to recover the ecological memory of tree growth. We quantified the effects of antecedent temperature and precipitation up to 4 years preceding the year of ring formation and integrated management effects with records of harvesting intensity from historical forest management archives. The SAM approach uncovered important time periods most influential to growth, typically the warmer and drier months or seasons, but variation among species and sites emerged. Silver fir responded primarily to past climate conditions (25–50 months prior to the year of ring formation), while European beech and Scots pine responded mostly to climate conditions during the year of ring formation and the previous year, although these responses varied among sites. Past management and climate interacted in such a way that harvesting promoted growth in young silver fir under wet and warm conditions and in old European beech under drier and cooler conditions. Our study shows that the ecological memory associated with climate legacies and historical forest management is species-specific and context-dependent, suggesting that both aspects are needed to properly evaluate forest functioning under climate change.

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