​Factors Affect to Stolon Formation and Tuberization in Potato: A Review

Abeytilakarathna, P.D.

doi:10.18805/ag.r-187

Cited by 6 publications

(3 citation statements)

References 60 publications

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“…GA also plays a function in the photoperiodic control of tuberization, and its endogenous levels are regulated by sucrose and abscisic acid (ABA). However, at high concentrations, it inhibits tuber induction in potato [ 76 , 77 ]. Efforts in this direction are necessary because they can compensate for the crop cycle being shortened due to high temperatures by utilizing the tropical region’s prevailing long photoperiod.…”

Section: Physiological Changes and Responses Of Potato Plants Under H...mentioning

confidence: 99%

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Lal

Tiwari

Kumar

et al. 2022

Plants

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Most cultivated potatoes are tetraploid, and the tuber is the main economic part that is consumed due to its calorific and nutritional values. Recent trends in climate change led to the frequent occurrence of heat and drought stress in major potato-growing regions worldwide. The optimum temperature for tuber production is 15–20 °C. High-temperature and water-deficient conditions during the growing season result in several morphological, physiological, biochemical, and molecular alterations. The morphological changes under stress conditions may affect the process of stolon formation, tuberization, and bulking, ultimately affecting the tuber yield. This condition also affects the physiological responses, including an imbalance in the allocation of photoassimilates, respiration, water use efficiency, transpiration, carbon partitioning, and the source–sink relationship. The biochemical responses under stress conditions involve maintaining ionic homeostasis, synthesizing heat shock proteins, achieving osmolyte balance, and generating reactive oxygen species, ultimately affecting various biochemical pathways. Different networks that include both gene regulation and transcription factors are involved at the molecular level due to the combination of hot and water-deficient conditions. This article attempts to present an integrative content of physio-biochemical and molecular responses under the combined effects of heat and drought, prominent factors in climate change. Taking into account all of these aspects and responses, there is an immediate need for comprehensive screening of germplasm and the application of appropriate approaches and tactics to produce potato cultivars that perform well under drought and in heat-affected areas.

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Section: Physiological Changes and Responses Of Potato Plants Under H...mentioning

confidence: 99%

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Lal

Tiwari

Kumar

et al. 2022

Plants

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“…In potato, exogenous application of ABA can promote tuberisation leading to higher number of tubers, whilst CKs have been shown to function in tuber enlargement and growth rather than to signal tuber transition. Tuber transition in turn is regulated not just by phytohormonal action, but also by photoperiod-mediated flowering transition [66]. Although the photoperiod response of potato is stronger under high temperature, the effect of elevated temperature is to inhibit tuber formation [62].…”

Section: Discussionmentioning

confidence: 99%

Physiological, molecular, and genetic mechanism of action of the biostimulant QuantisTM for increased thermotolerance of potato (Solanum tuberosum L.)

Jayaweera,

Dambire,

Angelopoulou

et al. 2023

Preprint

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Background Raising global temperatures limit crop productivity and new strategies are needed to improve the resilience of thermosensitive crops such as potato (Solanum tuberosum L.). Biostimulants are emerging as potential crop protection products against environmental stress, however their mechanism of action remains largely unknown, hindering their wider adoption. We used comprehensive physiological, molecular, and mass spectrometry approaches to develop understanding of the mechanism of plant thermotolerance exerted by the biostimulant, QuantisTM, under heat stress. Using orthologues gene mutations in Arabidopsis thaliana we report heat-defence genes, modified by QuantisTM, which were also investigated for potential overlapping functions in biotic stress defence to Sclerotinia sclerotiorum and Rhizoctonia solani. Results QuantisTM enhanced PSII photochemical efficiency and decreased thermal dissipation of potato grown under heat stress. These effects were associated with upregulation of genes with antioxidant function, including PR10, flavonoid 3′‐hydroxylase and b-glucosidases, and modulation of abscisic acid (ABA) and cytokinin (CK) activity in leaves by QuantisTM. The biostimulant modulated the expression of the heat-defence genes, PEN1, PR4 or MEE59, with functions in leaf photoprotection and root thermal protection, but with no overlapping function in biotic stress defence. Protective root growth under heat stress, following the biostimulant application, was correlated with enhanced CK signalling in roots. Significant upregulation of StFKF1 consistent with tuberization promoting effects and increase in endogenous concentration of ABA and CK in potato leaves modulated by QuantisTM resulted in 8% tuber weight increase and 42% larger tuber size, thus mitigating negative effects of heat stress on tuber growth. Conclusions QuantisTM application prior to heat stress effectively primed heat tolerance responses and alleviated temperature stress of S. tuberosum L. and A. thaliana by modulating the expression and function of PR4 and MEE59 and by regulating CK activity above and below ground, indicating that the mechanism of action of the biostimulant is conserved, and will be effective in many plant species. Thus, a biostimulant application targeting the most susceptible crop developmental stages to heat disorders can be effectively integrated within future agronomy practices to mitigate losses in other thermosensitive crops.

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“…Afterwards, a set of genes/proteins controlling tuberization was uncovered [9,10]. It has now become clear that the regulation of tuberization is based on a complex crosstalk between numerous hormonal and non-hormonal factors [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Canonical and Alternative Auxin Signaling Systems in Mono-, Di-, and Tetraploid Potatoes

Lomin

Kolachevskaya

Arkhipov

et al. 2023

IJMS

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It has long been known that the phytohormone auxin plays a promoting role in tuber formation and stress tolerance in potatoes. Our study aimed to identify and characterize the complete sets of auxin-related genes that presumably constitute the entire auxin signaling system in potato (Solanum tuberosum L.). The corresponding genes were retrieved from sequenced genomes of the doubled monoploid S. tuberosum DM1-3-516-R44 (DM) of the Phureja group, the heterozygous diploid line RH89-039-16 (RH), and the autotetraploid cultivar Otava. Both canonical and noncanonical auxin signaling pathways were considered. Phylogenetic and domain analyses of deduced proteins were supplemented by expression profiling and 3D molecular modeling. The canonical and ABP1-mediated pathways of auxin signaling appeared to be well conserved. The total number of potato genes/proteins presumably involved in canonical auxin signaling is 46 and 108 in monoploid DM and tetraploid Otava, respectively. Among the studied potatoes, spectra of expressed genes obviously associated with auxin signaling were partly cultivar-specific and quite different from analogous spectrum in Arabidopsis. Most of the noncanonical pathways found in Arabidopsis appeared to have low probability in potato. This was equally true for all cultivars used irrespective of their ploidy. Thus, some important features of the (noncanonical) auxin signaling pathways may be variable and species-specific.

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Factors Affect to Stolon Formation and Tuberization in Potato: A Review

Cited by 6 publications

References 60 publications

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Physiological, molecular, and genetic mechanism of action of the biostimulant QuantisTM for increased thermotolerance of potato (Solanum tuberosum L.)

Canonical and Alternative Auxin Signaling Systems in Mono-, Di-, and Tetraploid Potatoes

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​Factors Affect to Stolon Formation and Tuberization in Potato: A Review

Cited by 6 publications

References 60 publications

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Physiological, molecular, and genetic mechanism of action of the biostimulant QuantisTM for increased thermotolerance of potato (Solanum tuberosum L.)

Canonical and Alternative Auxin Signaling Systems in Mono-, Di-, and Tetraploid Potatoes

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Product

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Factors Affect to Stolon Formation and Tuberization in Potato: A Review