Physio-Biochemical Responses of Oil Palm (<i>Elaeis guineensis</i>Jacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Cha–um, Suriyan; Takabe, Teruhiro; Kirdmanee, Chalermpol

doi:10.1626/pps.15.65

Cited by 20 publications

(13 citation statements)

References 52 publications

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“…As expected, SS caused larger reductions in all growth traits compared with MS (Table 1). Proline content increased in response to water restriction, which is consistent with the previous reports by Cha-um et al (2012), Cao et al (2011) and Jazayeri et al (2015). The accumulation of proline in response to stress is a common phenomenon in plants and has been used as an indicator for the selection of stress-tolerant genotypes in plant breeding (Abebe et al, 2003;Bowne et al, 2012;Mwadzingeni et al, 2016;Zaher-Ara et al, 2016).…”

Section: Discussionsupporting

confidence: 90%

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Early assessment of drought tolerance in oil palm D × P progenies using growth and physiological characters in seedling stage

Duangpan

Buapet

Sujitto

et al. 2018

Plant Genet. Resour.

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Drought is a major constraint to oil palm plantation in many regions relying on rainfall. One strategy to overcome this problem is to develop drought-tolerant cultivars through screening and selection. Drought tolerance assessment based on growth and physiological traits provides an alternative approach for rapid screening especially in tree crops. The aims of this study were to determine the contribution of some growth and physiological parameters to drought response variation in oil palm seedling and to use those parameters to evaluate relative drought stress tolerance in tenera oil palm progenies. Eight D × P progenies were grown under well-watered, moderate and severe stressed conditions for a total of 6 months. Data on growth traits, maximum quantum yield (Fv/Fm), SPAD value and proline content were recorded. Principal component analysis (PCA) on studied traits revealed that PC1 and PC2 explained 74.57 and 76.80% of total variance in moderate and severe drought treatments, respectively. Major contributions towards the variation of control and drought-treated plants were identified and appeared to be growth traits in moderate drought stress and growth trait plus proline content in severe drought stress. According to drought tolerance index, PCA analysis and ranking method using integrated PCA values, PSU-106 and PSU-206 were identified to be relatively high tolerant to severe drought stress, while PSU-106, PSU-128, PSU-206 and PSU-208 were tolerant to moderate drought stress. Field validation of D × P progenies selected as drought tolerance is recommended to establish this indirect selection approach in oil palm breeding programme.

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Section: Discussionsupporting

confidence: 90%

“…Proline content increased in response to water restriction, which is consistent with the previous reports by Cha-um et al . (2012), Cao et al . (2011) and Jazayeri et al .…”

Section: Discussionmentioning

confidence: 99%

Early assessment of drought tolerance in oil palm D × P progenies using growth and physiological characters in seedling stage

Duangpan

Buapet

Sujitto

et al. 2018

Plant Genet. Resour.

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“…Promoter cis-element analysis of the amino acid permease genes in E. guineensis. increased in vegetative tissues in response to drought [30], while the total soluble protein content was affected by increasing drought severity [31]. Previous results showed that boron (B) and silicon (Si) application could induce physiological resistance of oil palm seedlings to drought stress [32].…”

Section: Cold Stress Effects On the Expression Profiles Of Amino Acidmentioning

confidence: 99%

Comparative identification and differential expression pattern of amino acid permease genes in Elaeis guineensis

Cao

Liu

et al. 2019

Biotechnology & Biotechnological Equipment

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Elaeis guineensis is a tropical crop with high oil content, and the nutritional value of oil is very high. Amino acids not only affect the growth and development of plants but also act as intermediate metabolites of oils, which determine the final quality of oils. In this study, eleven amino acid permease genes (EgAAPs) in E. guineensis were identified from the amino acid transporter family. Real-time PCR results showed that seven EgAAPs (EgAAP1, EgAAP2, EgAAP3, EgAAP4, EgAAP6 EgAAP9, and EgAAP10) played an important role in vegetative growth because of their higher expression levels in roots and leaves, but EgAAP5, EgAAP7, EgAAP8 and EgAAP11 were also important for their higher expression levels in flowers or fruits. E. guineensis seedlings were treated with 20% PEG-6000 and 4 C to induce drought stress and cold stress, respectively. The expression of six EgAAPs (EgAAP1, EgAAP2, EgAAP4, EgAAP6, EgAAP8 and EgAAP11) was decreased in both roots and leaves during cold treatment, and only the expression of EgAAP5 was increased in both roots and leaves after 6 h of cold treatment. The expression of six EgAAPs (EgAAP2, EgAAP4, EgAAP7, EgAAP8, EgAAP10 and EgAAP11) was decreased in roots but increased in leaves under PEG treatment, indicating an opposite pattern of expression levels of these EgAAPs in roots and leaves. However, only EgAAP5 had a similar pattern of expression levels between roots and leaves under PEG treatment. The findings provide information on how EgAAPs in E. guineensis are regulated during growth and development, and under various environmental stresses.

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“…This was supported by the absence of symptoms of water shortage in sago seedlings. Cha-Um et al (2012) reported that the seedlings were subjected to drought stress will be growth hampered, leaf chlorosis, leaf burn, and green leaf area reduction. Karuwalet al (2017) and Jafari et al (2018) added that plants grown under low water shortages had a decrease of biomass, chlorophyll content, physiological response, and relative water content.…”

Section: Character Of Sago Seedling Growthmentioning

confidence: 99%

Morphology, growth and genetic variations of sago palm (Metroxylon sagu) seedlings derived from seeds

2018

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Riyanto R, Widodo I, Abbas B. 2018. Morphology, growth and genetic variations of sago palm (Metroxylon sagu) seedlings derived from seeds. Biodiversitas 19: 632-638. Propagations of Sago palm using seeds will result in large variations of seedlings due to segregation resulting in the genetic diversity. The objectives of this study are to observe the morphology, growth and genetic variations of sago palm seedlings derived from seeds resulted from natural pollination. Morphological diversities of sago palm seedlings showed in high variations with the similarity coefficient ranging from 10% to 69%. Growth patterns of sago palm seedlings were divided into three categories i.e slow, medium, and fast growth. Genetic characters of sago palm seedlings showed that sago palm seedlings were varied with coefficients ranging from 23.6-74.5% and seedlings samples were separated into three groups of 49% the differentiation level. Based on the morphological, growth, and genetic characteristics of sago palm seedlings derived from seeds, it is predicted that sago palms in the natural condition may occur because of cross-pollination.

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Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Cited by 20 publications

References 52 publications

Early assessment of drought tolerance in oil palm D × P progenies using growth and physiological characters in seedling stage

Early assessment of drought tolerance in oil palm D × P progenies using growth and physiological characters in seedling stage

Comparative identification and differential expression pattern of amino acid permease genes in Elaeis guineensis

Morphology, growth and genetic variations of sago palm (Metroxylon sagu) seedlings derived from seeds

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