Aparición de Brotes de Chamizo [Atriplex  canescens (Pursh, Nutt)] para Fitoestabilización  de Plomo

Atriplex canescens es una especie nativa ampliamente distribuida en las zonas semiáridas de Norteamérica, desde el norte de México hasta el oeste de Estados Unidos de América. La presente revisión de la información publicada sobre esta especie durante los últimos 25 años pretende mostrar su taxonomía, distribución geográfica, hábitat, usos actuales y potenciales, así como las amenazas para su hábitat. Los resultados evidenciaron que el uso más amplio de A. canescens es el forrajero, en la alimentación de ganado bovino, caprino y ovino. También, destacó su empleo en la rehabilitación de suelos degradados, la captura de carbono, la prevención de la erosión y la fitorremediación de suelos contaminados por desechos industriales. Además, tiene un amplio potencial en el campo biotecnológico, como control biológico, biocombustible y fuente de genes tolerantes a la sequía y salinidad; asimismo, el consumo de flores, frutos, hojas y raíces de A. canescens ha sido muy importante para las comunidades indígenas. Sin embargo, a pesar de su amplia distribución enfrenta algunas amenazas, como el cambio de uso de suelo, la competencia con especies invasoras y la reducción de la conectividad entre poblaciones naturales. En síntesis, A. canescens es un taxón con una gran diversidad de usos, por lo que es necesario generar conocimiento para su manejo sustentable y conservación.

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Molecular identification and phylogenetic analysis of suaeda maritima from parangipettai coastal areas, southeast coast of india

Kongunadu Research Journal ◽

10.26524/krj.2020.5 ◽

2020 ◽

Vol 7 (1) ◽

pp. 28-34

Author(s):

Anbarasi G ◽

Vishnupriya B

Keyword(s):

18S Rrna ◽

Spinacia Oleracea ◽

Genetic Material ◽

Rrna Genes ◽

Atriplex Canescens ◽

Salt Marsh Plant ◽

Suaeda Maritima ◽

Atriplex Torreyi ◽

18S Rrna Genes ◽

Study Species

Conventional taxonomy is limited with delineating species and controversies arise with DNA barcoding based identifications. Hence, an alternative supporting approach is very much needed to identify species and differentiate them within the species based on the genetic material. 18S rRNA genes have been particularly helpful in analyzing phylogeny at the species level. In addition, bioinformatics which represents a new, growing area of science uses computational approaches to answer biological questions. Salt tolerant costal salt marsh plant of Suaeda maritima was selected for 18s rRNA sequencing to solve the ambiguity in itsspecies level identification. Similarity search of study species shared 99% similarity with 5 species of Atriplex canescens clone s128, Atriplex torreyi var. griffithsii clone p508, Spinacia oleracea, Oenothera laciniata clone,Beta vulgaris. Phylogenetic tree infer that S.maritima is closely related to Spinacia oleracea and Oenothera laciniata. Atriplex canescens (fourwing saltbush), Atriplex torreyi and Phaulothamnus spinescens, Celosia argentea found to be closely related and are in one group. Hence, this study result clearly shows thus study species evaluated from angiosperm and provides key step in understanding the evolution of salt tolerance in angiosperm.

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Phenacoccus solenopsis (cotton mealybug).

10.1079/cpc.109097.20210100303 ◽

2021 ◽

Author(s):

Paris Lambdin

Keyword(s):

International Trade ◽

New Mexico ◽

Host Plants ◽

Original Description ◽

Invasive Pest ◽

Native Range ◽

Atriplex Canescens ◽

Phenacoccus Solenopsis ◽

Short Period ◽

Cotton Mealybug

Abstract This mealybug species has the ability to increase rapidly in population size and spread to cover vast areas where host plants occur, in a relatively short period of time. It has been reported from over 200 hosts. Since the original description of P. solenopsis from Atriplex canescens in New Mexico, USA in 1898, no reports on its presence were reported until 1967 (McKenzie, 1967; McDaniel, 1975). Later, Fuchs et al. (1991) reported small, sporadic populations on cotton in Runnels County, Texas, USA in 1988 that spread 75 to 200 miles from the original site with contiguous populations by 1990. With the increase in international trade over the last few decades, this invasive pest has been collected and identified on host material at international ports and in greenhouses outside its native range (Jansen, 2004). As such, P. solenopsis has become established in the Afrotropical, Australasian, Nearctic, Neotropical, and Oriental regions.

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