Sacred lotus, the long-living fruits of China Antique

Shen-Miller, J.

doi:10.1079/ssr2002112

Cited by 143 publications

(112 citation statements)

References 38 publications

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“…On the contrary, a high level of a membrane lipid-hydrolyzing phospholipase D (PLDa1) seems detrimental for seed quality (Devaiah et al, 2007). Finally, the fantastic multicentenarian longevity of sacred lotus (Nelumbo nucifera) seeds (Shen-Miller et al, 1995;Shen-Miller, 2002) has been correlated with the extractible activity of the protein L-isoaspartyl methyltransferase, an enzyme repairing abnormal L-isoaspartyl residues accumulated in proteins during aging, notably during oxidative stress (Ingrosso et al, 2002;Clarke, 2003;Xu et al, 2004).…”

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confidence: 99%

Proteome-Wide Characterization of Seed Aging in Arabidopsis: A Comparison between Artificial and Natural Aging Protocols

et al. 2008

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A variety of mechanisms have been proposed to account for the extension of life span in seeds (seed longevity). In this work, we used Arabidopsis (Arabidopsis thaliana) seeds as a model and carried out differential proteomics to investigate this trait, which is of both ecological and agricultural importance. In our system based on a controlled deterioration treatment (CDT), we compared seed samples treated for different periods of time up to 7 d. Germination tests showed a progressive decrease of germination vigor depending on the duration of CDT. Proteomic analyses revealed that this loss in seed vigor can be accounted for by protein changes in the dry seeds and by an inability of the low-vigor seeds to display a normal proteome during germination. Furthermore, CDT strongly increased the extent of protein oxidation (carbonylation), which might induce a loss of functional properties of seed proteins and enzymes and/or enhance their susceptibility toward proteolysis. These results revealed essential mechanisms for seed vigor, such as translational capacity, mobilization of seed storage reserves, and detoxification efficiency. Finally, this work shows that similar molecular events accompany artificial and natural seed aging.

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confidence: 99%

Proteome-Wide Characterization of Seed Aging in Arabidopsis: A Comparison between Artificial and Natural Aging Protocols

et al. 2008

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“…Protein repair appears to play a key role in the long-term survival of seeds in the dry state. PIMT (for protein L-isoaspartyl methyltransferase), which limits and repairs age-damaged aspartyl and asparaginyl residues in proteins, has been associated with greater seed longevity because it is highly accumulated in sacred lotus seed (Nelumbo nucifera), one of the world's longest living seeds (1,300 years; Shen-Miller, 2002). Overexpression of PIMT1 in Arabidopsis enhanced both seed longevity and germination vigor, whereas reduced PIMT1 expression led to increased sensitivity to aging treatments and loss of seed vigor under stressful germination conditions (Ogé et al, 2008).…”

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confidence: 99%

Natural Variation for Seed Longevity and Seed Dormancy Are Negatively Correlated in Arabidopsis

et al. 2012

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Dormancy is a state of metabolic arrest that facilitates the survival of organisms during environmental conditions incompatible with their regular course of life. Many organisms have deep dormant stages to promote an extended life span (increased longevity). In contrast, plants have seed dormancy and seed longevity described as two traits. Seed dormancy is defined as a temporary failure of a viable seed to germinate in conditions that favor germination, whereas seed longevity is defined as seed viability after dry storage (storability). In plants, the association of seed longevity with seed dormancy has not been studied in detail. This is surprising given the ecological, agronomical, and economic importance of seed longevity. We studied seed longevity to reveal its genetic regulators and its association with seed dormancy in Arabidopsis (Arabidopsis thaliana). Integrated quantitative trait locus analyses for seed longevity, in six recombinant inbred line populations, revealed five loci: Germination Ability After Storage1 (GAAS1) to GAAS5. GAAS loci colocated with seed dormancy loci, Delay Of Germination (DOG), earlier identified in the same six recombinant inbred line populations. Both GAAS loci and their colocation with DOG loci were validated by near isogenic lines. A negative correlation was observed, deep seed dormancy correlating with low seed longevity and vice versa. Detailed analysis on the collocating GAAS5 and DOG1 quantitative trait loci revealed that the DOG1-Cape Verde Islands allele both reduces seed longevity and increases seed dormancy. To our knowledge, this study is the first to report a negative correlation between seed longevity and seed dormancy.

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“…In most plant species, seeds possess reduced PIMT activity during germination. However, consistent PIMT activity in sacred lotus seeds minimizes the racemization of aspartyl in proteins; therefore, they possess exceptional longevity (Shen-Miller, 2002).…”

Section: Enzyme Repairmentioning

confidence: 99%

Genomics: A Hallmark to Monitor Molecular and Biochemical Processes Leading Toward a Better Perceptive of Seed Aging and ex-situ Conservation

Ahmad¹,

Shah²,

Rehman³

et al. 2017

Current Issues in Molecular Biology

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Abbreviations:AFLP, amplified fragment length polymorphism AGO, argonaute miRNA, micro RNA NGS, next generation sequencing PCD, programmed cell death PIMT, protein L-isoaspartyl methyltransferase PRC2, Polycomb repressive complex 2 RAPD, random amplification of polymorphic DNA ROS, reactive oxygen species SSR, simple sequence repeat TUNEL, terminal deoxynucleotide transferasemediated dUTP nick-end labeling qRT-PCR, quantitative reverse transcriptional polymerase chain reaction Abstract For human food security, the preservation of 7.4 million ex-situ germplasm is a global priority. However, ex situ-conserved seeds are subject to aging, which reduces their viability and ultimately results in the loss of valuable genetic material over long periods. Recent progress in seed biology and genomics has revealed new opportunities to improve the long-term storage of ex-situ seed germplasm. This review summarizes the recent improvements in seed physiology and genomics, with the intention of developing genomic tools for evaluating seed aging. Several lines of seed biology research have shown promise in retrieving viability signal from various stages of seed germination. We conclude that seed aging is associated with mitochondrial alteration and programmed cell death, DNA and enzyme repair, anti-oxidative genes, telomere length, and epigenetic regulation. Clearly, opportunities exist for observing seed aging for developing genomic tools to increment the traditional germination test for effective conservation of ex-situ germplasm.

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Sacred lotus, the long-living fruits of China Antique

Abstract: In the West, lotus (Nelumbo nucifera Gaertn.) is relatively little known. However, for more than 3000 years, lotus plants have been cultivated as a crop in Far-East Asia, where they are used for food, medicine and play a significant role in religious and cultural activities.

Cited by 143 publications

References 38 publications

Proteome-Wide Characterization of Seed Aging in Arabidopsis: A Comparison between Artificial and Natural Aging Protocols

Proteome-Wide Characterization of Seed Aging in Arabidopsis: A Comparison between Artificial and Natural Aging Protocols

Natural Variation for Seed Longevity and Seed Dormancy Are Negatively Correlated in Arabidopsis

Genomics: A Hallmark to Monitor Molecular and Biochemical Processes Leading Toward a Better Perceptive of Seed Aging and ex-situ Conservation

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