Salt resistance of species of the Chenopodiaceae family (Amaranthaceae s.l.) in the desert part of the Syrdarya River Valley, Kazakhstan
Osmonali B.B. Vesselova P.V. Kudabayeva G.M. Duisenbayev S. Taukebayev O. Zulpykhanov K. Ussen S. Abdiildanov D.Sh.
2024Society for Indonesian Biodiversity
Biodiversitas
2024#25Issue 114162 - 4170 pp.
Salt tolerance is a complex ecological strategy: halophytes have adaptive physiological and anatomical modifications to ‘combat’ the damaging effects of osmotic and metabolic stress that cause impaired growth and reproduction. Halophytes are represented in many angiosperm families that are distributed worldwide. Halophytes represent a heterogeneous group of plants that combine representatives of different taxa, life forms, ecological types, and floras. The family Chenopodiaceae belongs to the largest and oldest families in arid territories of the globe. It occupies the leading position in the spectrum of families of the desert floras of Kazakhstan. The choice of the study region—the desert part of the Syrdarya River Valley within Kyzylorda oblast, Republic of Kazakhstan—is conditioned by a wide distribution of saline territories within its limits, to which the overwhelming majority of species of the studied family are confined. The objects of the study are phytocenoses (communities) located in saline and non-saline areas with the participation or dominance of Chenopodiaceae (Amaranthaceae s.l.) species in the desert part of the Syrdarya River Valley. Distribution of studied taxa on preference to one or another degree of salinity at genus level showed certain peculiarities. In particular, it was revealed that species of genera Atriplex, Caroxylon, and Bassia grow, as a rule, on soils from non-saline to slightly saline. In turn, species of the Suaeda genus prefer to settle on soils of medium and high saline. Finally, the species categorized as hyperhalophytes (preferring a high degree of salinity) belong exclusively to one subfamily, Salicornioideae. This indicates a certain direction of evolution of the adaptive characteristics of representatives of this family.
Arid region , communities , desalinization , dominants , edificators , halophytes , salinized soil
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Laboratory of the Flora of Higher Plants, Institute of Botany and Phytointroduction., Timiryazev Str. 36D/1, Almaty, 050040, Kazakhstan
Department of Biodiversity and Bioresources, Al-Farabi Kazakh National University, 71 al-Farabi Ave, Almaty, 050040, Kazakhstan
Department of Geography, Land Management, and Cadastre, Faculty of Geography and Environmental Sciences, Al-Farabi Kazakh National University, 71 al-Farabi Ave, Almaty, 050040, Kazakhstan
Space Technologies, and Remote Sensing Center, Al-Farabi Kazakh National University, 71 al-Farabi Ave, Almaty, 050040, Kazakhstan
Department of Cartography and Geoinformatics, Faculty of Geography and Environmental Sciences, Al-Farabi Kazakh National University, 71 al-Farabi Ave, Almaty, 050040, Kazakhstan
Laboratory of the Flora of Higher Plants
Department of Biodiversity and Bioresources
Department of Geography
Space Technologies
Department of Cartography and Geoinformatics
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