Effect of pH, light intensity, and fertilizers on acclimatization of endangered rooted plantlets<i>Malus niedzwetzkyana</i>for restoration in nature

Nurtaza, Aidana; Karimova, Venera; Magzumova, Gulmira; Muranets, Anna; Kakimzhanova, Almagul

doi:10.1080/01904167.2022.2160756

Cited by 3 publications

(3 citation statements)

References 44 publications

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“…We did not collect material for the analysis of phytohormones in this experiment but imagine that their levels found in different sections of the root (tips, mid-root, and attachment to the stem) might differ according to pH as well as the expression of genes related to phytohormone pathways. The role of pH in apple seedling development agrees with our observations that lower pH inhibited seedling growth; however, in their study, Nurtaza et al (2022) used peat substrate with pH adjusted up to neutrality, whereas our study used a pH of 8. In addition to lateral and fine root development, pH affected the overall "lengthening" of the root mass, where pH 8 displayed some of the longest root systems with a significant Ellipse Axis Ratio.…”

Section: Discussionsupporting

confidence: 90%

“…One of the major environmental factors influencing plant growth is soil acidity/alkalinity (pH), and its associated effects on nutrient availability, uptake, and bio-rhizosphere composition ( Neilsen et al., 1982 ; Wang et al., 2012 ; Nurtaza et al., 2022 ). Varying pH levels in soil and/or irrigation water tend to modify the mobility and availability of nutrients, such that when they interact with different rootstock genotypes, they produce very different orchard growth and productivity patterns ( Thomidis and Tsipouridis, 2005 ; Vrsic et al., 2016 ; Ghimire and Vashisth, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

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Effect of solution pH on root architecture of four apple rootstocks grown in an aeroponics nutrient misting system

Farqani,

Cheng,

Robinson

et al. 2024

Front. Plant Sci.

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The pH of the solution in the rhizosphere is an important factor that determines the availability and mobility of nutrients for plant uptake. Solution pH may also affect the root distribution and architecture of apple rootstocks. In this study, we evaluated the effect of solution pH on root system development of apple rootstocks using an aeroponics system designed and developed at Cornell AgriTech Geneva, USA. Four Geneva® apple rootstocks (G.210, G.214, G.41, and G.890) were grown in an aeroponic system under nutrient solution misting featuring continuously adjusted pH levels to three pH treatments (5.5, 6.5, and 8.0). Root development was monitored for 30 days and evaluated regularly for distribution and root mass. Images of the developed roots grown in the aeroponic system were collected at the end of the experiment using a high-resolution camera and analyzed using GiA Roots® software, which generates root architecture parameter values in a semi-automated fashion. The resulting root architecture analysis showed that the Geneva® rootstocks were significantly different for two architecture parameters. The length-to-width ratio analysis represented by two GiA Roots parameters (minor-to-major ellipse ratio and network width-to-depth ratio) showed that G.210 was flatter than G.890, which had a greater tendency to grow downward. Rootstocks G.214 and G.41 displayed similar growth values. The solution pH affected most root architecture parameter measurements where overall root growth was higher at pH 8 than at pH 5.5 and 6.5, which showed similar growth. In general, the average root width tended to decrease at higher pH values. While there were no significant differences in the leaf nutrient concentrations of P, K, Ca, Mg, S, B, Zn, Cu, and Fe within the four rootstocks, the pH level of the solution had a significant effect on P, Ca, and Mn. This study is the first of its kind to investigate the effect of pH on root architecture in a soil-free (aeroponic) environment and may have implications for apple root behavior under field conditions where pH levels are different.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Effect of solution pH on root architecture of four apple rootstocks grown in an aeroponics nutrient misting system

Farqani,

Cheng,

Robinson

et al. 2024

Front. Plant Sci.

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“…-The technologies for introducing into the culture in vitro and micropropagation of explants of 18 rare and endangered species of the flora of Kazakhstan have been optimized: Alnus glutinosa, Iris lactea, Tulipa schrenkii, Tulipa greigii, Juniperus seravschanica, Allium ivasczenkoae, Rhapоnticum carthamoides [182,183], Malus niedzwetzkyana [184], Paeonia anomala and other species. These technologies consist of the stages of preliminary sterilization of explants, obtaining sterile seedlings, and induction of adventitious shoot formation for subsequent microcloning.…”

Section: Biobanks Of Flora and Fauna In Kazakhstanmentioning

confidence: 99%

Biobanks as a way to conserve biodiversity in the context of the continuing decline in the species diversity of wild flora and fauna

Dairov,

Mukanov,

Khapilina

et al. 2024

Eurasian Journal of Applied Biotechnology

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To date, human actions have significantly changed 75% of the Earth's surface. This has resulted in an unprecedented increase in the rate of biodiversity loss in human history. According to the International Union for Conservation of Nature and Natural Resources, over the past 500 years, as a result of direct or indirect influence of the anthropogenic factor, 774 animal species and 123 plant species have become extinct. To prevent further loss of biodiversity, in the context of the ongoing «crisis of biodiversity», all over the world, including Kazakhstan, there is a need for reliable conservation of the available genetic resources of plants and animals, primarily rare and endangered species. In this regard, specialized biobanks of organized collections of living biomaterials are successfully used worldwide for the conservation and restoration of populations of rare and endangered species of flora and fauna. The article presents information about some of the largest biobanks and their importance in solving this global problem. The experience of scientific centers of Kazakhstan in the field of biobanking of biomaterials of wild flora and fauna, including rare and endangered species, is given, and the results of the National Center for Biotechnology in this area are summarized.

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In vitro clonal micropropagation of selected Malus niedzwetzkyana Dieck forms demonstrating high resilience when introduced into urban environments

Belanova,

Zaytseva,

Lyakh

2024

Trudy po prikladnoy botanike, genetike i selektsii

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Background. Currently, the use of an interdisciplinary approach based on a combination of traditional introduction methods and clonal micropropagation techniques makes it possible to solve one of the key problems of introduction – the establishment of bioresource collections consisting of selected plant accessions with valuable agronomic traits and resistance to unfavorable urban environments. Materials and methods. A plant introduction study resulted in identifying seven specimens of Malus niedzwetzkyana Dieck with resilience to urban environments, high rate of crown development, and longevity. They served as source material for the development of a clonal propagation protocol and in vitro preservation of selected genotypes of this species. Results. It was shown for M. niedzwetzkyana that the most favorable time for taking its plant material for introduction into in vitro culture is the beginning of the active growth of vegetative shoots after flowering. The most optimal sterilization technique for such plant material was a stepwise regime using alcohol, sodium hypochlorite, and silver nitrate: it provided from 50 to 70% of sterile explants and the maximum percentage of meristem proliferation. Combining 0.8 mg/L of benzylaminopurine (BAP) with 0.14 mg/L of indole-3-butyric acid (IBA) at the stage of microclonal propagation ensured a significant increase of the reproduction coefficient (on average up to 5.3 ± 0.7) and an improvement in morphometric parameters of microshoots; the maximum frequency of shoot proliferation was 100%. The yield of shoots adapted to ex vitro conditions was 90%. Conclusion. The developed clonal micropropagation protocol made it possible to introduce selected M. niedzwetzkyana forms into in vitro culture and reproduce them in order to set up a resource base for further fundamental and applied research into the system of the genus Malus Mill.

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Effect of pH, light intensity, and fertilizers on acclimatization of endangered rooted plantletsMalus niedzwetzkyanafor restoration in nature

Cited by 3 publications

References 44 publications

Effect of solution pH on root architecture of four apple rootstocks grown in an aeroponics nutrient misting system

Effect of solution pH on root architecture of four apple rootstocks grown in an aeroponics nutrient misting system

Biobanks as a way to conserve biodiversity in the context of the continuing decline in the species diversity of wild flora and fauna

In vitro clonal micropropagation of selected Malus niedzwetzkyana Dieck forms demonstrating high resilience when introduced into urban environments

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