Comparative mineral and hormonal analyses of wild type and TLS somaclonal variant derived from oil palm (Elaeis guineensis Jacq. var. tenera) tissue culture

Habib, Sheikh Hasna; Ooi, Siew–Eng; Novák, Ondřej; Tarkowská, Danuše; Rolčı́k, Jakub; Doležal, Karel; Syed-Alwee, S. S. R.; Ho, Chai Ling; Namasivayam, Parameswari

doi:10.1007/s10725-012-9707-1

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…Hormonal analysis by Habib et al revealed that various cytokinin derivatives such as transzeatin, trans-zeatin riboside, trans-zeatin O-glucoside, and transzeatin riboside 5′-monophosphate were significantly higher in truncated oil palm leaf syndrome leaves compared to wild-type oil palm leaves. 38 Jasmonic Acid. Jasmonic acid (JA) has been demonstrated to be involved in cross talk with ethylene signaling components in Arabidopsis and has been associated with fruit maturation.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Of these, only cytokinin- N -glucosyltransferase 2 exhibited increased expression towards ripening (Figure ). Hormonal analysis by Habib et al revealed that various cytokinin derivatives such as trans -zeatin, trans -zeatin riboside, trans -zeatin O -glucoside, and trans -zeatin riboside 5′-monophosphate were significantly higher in truncated oil palm leaf syndrome leaves compared to wild-type oil palm leaves …”

Section: Results and Discussionmentioning

confidence: 99%

“…6 Many recent studies have shown that the phytohormone abscisic acid (ABA) plays an important role in the regulation of fruit development and ripening, 7 and gibberellic acid (GA 3 ) has been proposed as a possible trigger to increase fruit set and fruit size of numerous vine and fruit crops. 8 To date in oil palm, hormone analysis has been reported in sap exudate from stumps of preanthesis inflorescences, 9 wild-type and truncated leaves, 10 and fruit mesocarp. 11 In addition to plant hormones, other natural substances, such as the polyamines (PAs), may be involved in controlling fruit growth and ripening.…”

Section: ■ Introductionmentioning

confidence: 99%

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Hormones, Polyamines, and Cell Wall Metabolism during Oil Palm Fruit Mesocarp Development and Ripening

Teh

Neoh

Wong

et al. 2014

J. Agric. Food Chem.

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Oil palm is one of the most productive oil-producing crops and can store up to 90% oil in its fruit mesocarp. Oil palm fruit is a sessile drupe consisting of a fleshy mesocarp from which palm oil is extracted. Biochemical changes in the mesocarp cell walls, polyamines, and hormones at different ripening stages of oil palm fruits were studied, and the relationship between the structural and the biochemical metabolism of oil palm fruits during ripening is discussed. Time-course analysis of the changes in expression of polyamines, hormones, and cell-wall-related genes and metabolites provided insights into the complex processes and interactions involved in fruit development. Overall, a strong reduction in auxin-responsive gene expression was observed from 18 to 22 weeks after pollination. High polyamine concentrations coincided with fruit enlargement during lipid accumulation and latter stages of maturation. The trend of abscisic acid (ABA) concentration was concordant with GA₄ but opposite to the GA₃ profile such that as ABA levels increase the resulting elevated ABA/GA₃ ratio clearly coincides with maturation. Polygalacturonase, expansin, and actin gene expressions were also observed to increase during fruit maturation. The identification of the master regulators of these coordinated processes may allow screening for oil palm variants with altered ripening profiles.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%