The Effects of Neighbors on the Demography of a Dominant Desert Shrub (Ambrosia dumosa)

2001 ◽  
Vol 71 (4) ◽  
pp. 491 ◽  
Author(s):  
Maria N. Miriti ◽  
S. Joseph Wright ◽  
Henry F. Howe
Keyword(s):  
Ambrosia Dumosa ◽  
Desert Shrub

THE EFFECTS OF NEIGHBORS ON THE DEMOGRAPHY OF A DOMINANT DESERT SHRUB (AMBROSIA DUMOSA)

2001 ◽  
Vol 71 (4) ◽  
pp. 491-509 ◽  
Author(s):  
Maria N. Miriti ◽  
S. Joseph Wright ◽  
Henry F. Howe
Keyword(s):  
Ambrosia Dumosa ◽  
Desert Shrub

Managing lntermountain rangelands - salt-desert shrub ranges

1984 ◽  
Author(s):  
James P. Blaisdell ◽  
Ralph C. Holmgren
Keyword(s):  
Desert Shrub ◽  
Salt Desert

scholarly journals Cloning and functional analysis of the FAD2 gene family from desert shrub Artemisia sphaerocephala

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Xiumei Miao ◽  
Lijing Zhang ◽  
Xiaowei Hu ◽  
Shuzhen Nan ◽  
Xiaolong Chen ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Linoleic Acid ◽  
Gene Family ◽  
Fatty Acid Biosynthesis ◽  
Family Members ◽  
Pcr Analysis ◽  
Mrna Levels ◽  
Acid Biosynthesis ◽  
Desert Shrub ◽  
Artemisia Sphaerocephala

Abstract Background Linoleic acid is an important polyunsaturated fatty acid, required for all eukaryotes. Microsomal delta-12 (Δ12) oleate desaturase (FAD2) is a key enzyme for linoleic acid biosynthesis. Desert shrub Artemisia sphaerocephala is rich in linoleic acid, it has a large FAD2 gene family with twenty-six members. The aim of this work is to unveil the difference and potentially functionality of AsFAD2 family members. Results Full-length cDNAs of twenty-one AsFAD2 genes were obtained from A. sphaerocephala. The putative polypeptides encoded by AsFAD2 family genes showed a high level of sequence similarity and were relatively conserved during evolution. The motif composition was also relatively conservative. Quantitative real-time PCR analysis revealed that the AsFAD2–1 gene was strongly expressed in developing seeds, which may be closely associated with the high accumulating ability of linoleic acid in A. sphaerocephala seeds. Although different AsFAD2 family members showed diverse response to salt stress, the overall mRNA levels of the AsFAD2 family genes was stable. Transient expression of AsFAD2 genes in the Nicotiana benthamiana leaves revealed that the encoded proteins were all located in the endoplasmic reticulum. Heterologous expression in Saccharomyces cerevisiae suggested that only three AsFAD2 enzymes, AsFAD2–1, − 10, and − 23, were Δ12 oleate desaturases, which could convert oleic acid to linoleic acid, whereas AsFAD2–1 and AsFAD2–10 could also produce palmitolinoleic acid. Conclusions This research reported the cloning, expression studies, subcellular localization and functional identification of the large AsFAD2 gene family. These results should be helpful in understanding fatty acid biosynthesis in A. sphaerocephala, and has the potential to be applied in the study of plant fatty acids traits.

Diversity of phenolic compounds and plant traits in coexisting Patagonian desert shrub species of Argentina

Plant Ecology ◽  
2013 ◽  
Vol 214 (11) ◽  
pp. 1335-1343 ◽  
Author(s):  
Hebe Saraví Cisneros ◽  
Mónica B. Bertiller ◽  
Analía L. Carrera ◽  
Cecilia Larreguy
Keyword(s):  
Phenolic Compounds ◽  
Plant Traits ◽  
Shrub Species ◽  
Desert Shrub

Taxonomy of Ctenomys (Rodentia: Ctenomyidae) in northwestern Patagonia, Argentina: the occurrence of the “mendocinus” lineage

Mammalia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mauro N. Tammone ◽  
Ulyses F.J. Pardiñas
Keyword(s):  
South America ◽  
Molecular Data ◽  
Species Level ◽  
Subterranean Rodents ◽  
Mammalian Fauna ◽  
Southern South America ◽  
Monte Desert ◽  
Desert Shrub ◽  
Northern Patagonia ◽  
Northern Portion

Abstract Subterranean rodents Ctenomys are iconic representatives of the mammalian fauna from southern South America. Based on molecular data, eight lineages have been identified within the genus, although species-level identifications and relationships are still debated. Until now, the “magellanicus” clade has been the only lineage mentioned from arid, extra-Andean portions of Patagonia. Here, we report the presence of a Ctenomys population from northern Patagonia that is unambiguously associated with the Central Argentinean “mendocinus” lineage. Most of the 160,000 km2 comprising the northern portion of Patagonia – an area consisting primarily of Monte Desert shrub-land – are inhabited by Ctenomys populations of unknown taxonomy.

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