Adaptive Alterations in the Ultrastructure of Chloroplasts and the Contents of Pigments and Sugars under Low Temperature Hardening of Potato Plants: Role of Δ12 Acyl-Lipid Desaturase

Naraikina, N. V.; Астахова, Н. В.; Deryabin, A. N.; Sin’kevich, M. S.; Trunova, T. I.

doi:10.1134/s1062359018060092

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…The calculated index of ∆9-desaturase activity of transformed plants (Table 3) was higher than that in the nonhardened control (0.60 and 0.48, respectively). Moreover, in accordance with a higher total content of FA in membrane lipids, at the beginning of a hardening, transformed plants had a higher number of thylakoids [22] than the control plants (154 and 86, respectively). A similar quantity of thylakoids was observed in control plants only after their hardening.…”

Section: Resultsmentioning

confidence: 56%

Changes in Fatty Acid Composition and Lipid Content Occurring in Potato Leaves during Cold Hardening: the Role of ∆12-Acyl-Lipid Desaturase

Naraikina

Пчелкин

Цыдендамбаев

et al. 2020

Russ J Plant Physiol

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The qualitative composition and changes in the total fatty acid (FA) content in leaves of wild-type potato (Solanum tuberosum L., cv. Desnitsa) plants and plants transformed with the desA gene of Δ12-acyllipid desaturase from Synechocystis sp. PCC 6803 have been studied under cold hardening conditions (6 days at 5°С). During cold adaptation, plants of both types increase their cold resistance, but transformed plants significantly exceed control ones in relation to this parameter. Following cold hardening, the content of total etherified FA in leaves of control plants increases by almost 25% due to the decrease in the content of saturated FA and almost 30% increase in the content of polyunsaturated FA (PUFA); the growth of the PUFA content is provided mainly by linoleic (C 18:2 ) and linolenic (C 18:3 ) acids. Nonhardened leaves of transformed plants are characterized by the same FA content (especially C 18:3 ) as the leaves of hardened control plants. Due to this fact, increase in the total FA content in hardened transformants is not so significant as in the control; at the same time, the content of linoleic (C 18:2 ) acid increases by 30% (the calculated activity index for ∆12-desaturases also slightly increased). The growth of a hexadecatrienic (С 16:3 ) acid content in transformed plants probably results from a low-temperature activation of potato ω3-desaturases. The obtained data allow one to suppose that the higher resistance of transformed plants compared to control ones is connected with a constitutively increased PUFA content and determines more efficient cold hardening of such plants.

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Section: Resultsmentioning

confidence: 56%

Changes in Fatty Acid Composition and Lipid Content Occurring in Potato Leaves during Cold Hardening: the Role of ∆12-Acyl-Lipid Desaturase

Naraikina

Пчелкин

Цыдендамбаев

et al. 2020

Russ J Plant Physiol

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Adaptive strategy of plant cells during chilling: Aspect of ultrastructural reorganization

2023

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Soluble carbohydrates and plant cold acclimation

Belyavskaya¹,

Fediuk²,

Zolotareva³

2020

Visn. Hark. nac. agrar. univ., Ser. Biol.

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Brazil soybean production for 2020/21 is forecast at a record 133.0 million metric tons (mmt), unchanged despite the delay in planting and larger by 7.0 mmt (6 percent) from last season's record crop of 126.0 mmt. The harvested area is forecast at a record 38.6 million hectares (mha), up 1.7 mha (5 percent) from last season's record. Yield is forecast slightly below the 10-year trend at 3.45 tons per hectare (t/ha), up 1 percent from last year. This would be the second highest yield on record, with the prior record at 3.51 t/ha reached in 2017/18.

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Adaptive Alterations in the Ultrastructure of Chloroplasts and the Contents of Pigments and Sugars under Low Temperature Hardening of Potato Plants: Role of Δ12 Acyl-Lipid Desaturase

Cited by 3 publications

References 25 publications

Changes in Fatty Acid Composition and Lipid Content Occurring in Potato Leaves during Cold Hardening: the Role of ∆12-Acyl-Lipid Desaturase

Changes in Fatty Acid Composition and Lipid Content Occurring in Potato Leaves during Cold Hardening: the Role of ∆12-Acyl-Lipid Desaturase

Adaptive strategy of plant cells during chilling: Aspect of ultrastructural reorganization

Soluble carbohydrates and plant cold acclimation

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