Isolation and characterization of a new glucopyranosyl derivative of 6‐(3‐methyl‐2‐butenylamino)purine from sweet potato tubers

Hashizume, Takeshi; Suye, Shin‐ichiro; Soeda, Takashi; Sugiyama, Tamiji

doi:10.1016/0014-5793(82)80561-9

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…A substantial amount of information is however available for storage root formation which is part of RSA in sweetpotato and cassava. Cytokinin is important in regulating storage root development in sweetpotato (Hashizume et al, 1982). Zeatin Riboside (ZR), Trans-Zeatin Riboside (t-ZR) and 9-glucosyl-n-6-2-isopentenyl adenosine (i6Ado) are the major CK involved in developing and activating the primary cambium.…”

Section: Hormonal and Genetic Control Pathways For Root System Architmentioning

confidence: 99%

Root System Architecture and Abiotic Stress Tolerance: Current Knowledge in Root and Tuber Crops

2016

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The challenge to produce more food for a rising global population on diminishing agricultural land is complicated by the effects of climate change on agricultural productivity. Although great progress has been made in crop improvement, so far most efforts have targeted above-ground traits. Roots are essential for plant adaptation and productivity, but are less studied due to the difficulty of observing them during the plant life cycle. Root system architecture (RSA), made up of structural features like root length, spread, number, and length of lateral roots, among others, exhibits great plasticity in response to environmental changes, and could be critical to developing crops with more efficient roots. Much of the research on root traits has thus far focused on the most common cereal crops and model plants. As cereal yields have reached their yield potential in some regions, understanding their root system may help overcome these plateaus. However, root and tuber crops (RTCs) such as potato, sweetpotato, cassava, and yam may hold more potential for providing food security in the future, and knowledge of their root system additionally focuses directly on the edible portion. Root-trait modeling for multiple stress scenarios, together with high-throughput phenotyping and genotyping techniques, robust databases, and data analytical pipelines, may provide a valuable base for a truly inclusive ‘green revolution.’ In the current review, we discuss RSA with special reference to RTCs, and how knowledge on genetics of RSA can be manipulated to improve their tolerance to abiotic stresses.

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Section: Hormonal and Genetic Control Pathways For Root System Architmentioning

confidence: 99%

Root System Architecture and Abiotic Stress Tolerance: Current Knowledge in Root and Tuber Crops

2016

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“…Z-9-glucoside (Z9G) and Z9G-d 5 were synthesized by procedures similar to that of Hashizume et al . [5] . RZ-5'-monophosphate (RZMP)-d5 and i6 Ado-5'-monophosphate(i6AdoMP)-d 6 were synthesized as described in the literature [15,16].…”

Section: Chemicalsmentioning

confidence: 99%

Quantitative changes of free-base, riboside, ribotide and glucoside cytokinins in developing rice grains

et al. 1989

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Rice grains at various growth stages were analysed for endogenous free-base, riboside, ribotide and glucoside cytokinins on the basis of GC/MS and GC/SIM using deuterium-labeled internal standards . Cytokinins identified were trans-and cis-zeatins, transand cis-ribosylzeatins, isopentenyladenosine, isopentenyladenosine monophosphate, transand cis-ribosylzeatin monophosphates, trans-and cis-zeatin-O-glucosides, trans-and cisribosylzeatin-O-glucosides and zeatin-9-glucoside (trans/cis geometry was not determined) . The highest amounts of cytokinins were recorded at the early growth stage, namely either heading, anthesis or milk stage, suggesting that cytokinins may play important roles in the development of the grain . Cis isomers of zeatin derivatives were always present and more abundant than trans isomers . It seemed unlikely that cis isomers were released from t-RNAs during the extraction procedure .

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“…It is probable that temperature and uctuations in temperature, together with short days favour the growth of tubers and limit the growth of foliage (Youg 1962). Environmental factors such as temperature, moisture and physico-chemical properties of soils along with photoperiod regulate the levels of endogenous phytohormones which induces tuber in sweet potato [Hashizume et al 1982].…”

Section: Methodsmentioning

confidence: 99%

Assessment of sweet potato germplasm for selection of day-neutral genotypes for wider adaptability

Anil,

et al. 2023

Preprint

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A total of 61 superior genotypes which included germplasm collections and prebreeding lines of sweet potato maintained in NAGS at ICAR-CTCRI and the popular released variety Sree Arun as control were evaluated in this study for six seasons for finding out the stable performer over the seasons. The best performers in each season were continued in the following seasons along with new genotypes for evaluation for six seasons. The observed variable was the yield (kg per plant). Data analysis was performed on yield character (kg per plant) by using SAS 9.1.3 (SAS Institute, Cary, North Carolina, USA), and means were separated by the least significant difference (LSD) at (p ≤ 0.01). The dry matter, starch, sugar, fibre and ash were estimated in the selected accessions. The genetic merit of each genotype was evaluated by best linear unbiased prediction (BLUP) using restricted maximum likelihood (REML) for variance component estimation in R. The overall mean across locations and years for tuber yield showed that 526/7 (S-1609) as the best accession, followed by S-1401. A similar ranking of varieties was observed for tuber yield using BLUPs. Amongst the tested samples, two (526/7 and S-1401) were found to be superior as compared to the rest of samples in terms of sensory evaluation criteria especially consistency, texture and sweetness and overall taste.

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Isolation and characterization of a new glucopyranosyl derivative of 6‐(3‐methyl‐2‐butenylamino)purine from sweet potato tubers

Cited by 8 publications

References 16 publications

Root System Architecture and Abiotic Stress Tolerance: Current Knowledge in Root and Tuber Crops

Root System Architecture and Abiotic Stress Tolerance: Current Knowledge in Root and Tuber Crops

Quantitative changes of free-base, riboside, ribotide and glucoside cytokinins in developing rice grains

Assessment of sweet potato germplasm for selection of day-neutral genotypes for wider adaptability

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