The Genetic Reprogramming of Polyamine Homeostasis During the Functional Assembly, Maturation, and Senescence-Specific Decline of the Photosynthetic Apparatus in Hordeum vulgare

Ioannidis, Nikolaos; Zschiesche, Wiebke; Barth, Olaf; Kotakis, Christos; Navakoudis, Eleni; Humbeck, Klaus; Kotzabasis, Kiriakos

doi:10.1007/s00344-013-9387-8

Cited by 21 publications

(15 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand PAs might play a role as a carbon and nitrogen reservoir (Moschou et al, 2012), if the senescence leads to programmed cell death. Recently, Ioannidis et al (2014) showed that PA homoeostasis is closely linked to the developmental phase of the barley (Hordeum vulgare) leaf, and that biosynthesis of PAs was down-regulated during senescence due to decreased transcription of ADC and ODC (Ioannidis et al, 2014). When considering the temporal changes in the present study, free PA levels remained stable or had a slightly decreasing trend towards the end of the experiment in the seedlings whereas soluble conjugated fraction remained relatively stable in all treatments.…”

Section: Discussionsupporting

confidence: 38%

Water availability influences morphology, mycorrhizal associations, PSII efficiency and polyamine metabolism at early growth phase of Scots pine seedlings

Muilu‐Mäkelä

Vuosku

Läärä

et al. 2015

Plant Physiology and Biochemistry

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 38%

Water availability influences morphology, mycorrhizal associations, PSII efficiency and polyamine metabolism at early growth phase of Scots pine seedlings

Muilu‐Mäkelä

Vuosku

Läärä

et al. 2015

Plant Physiology and Biochemistry

View full text Add to dashboard Cite

“…Transcripts of this gene are more accumulated in younger than older apple leaves, similar to the results obtained in alfalfa for enzymatic activity levels [36]- [38]. Polyamine levels, such as spermidine, spermine and putrescine, have been reported as a physiological marker of ageing, maturation, and loss of morphogenetic capability [39] [40]. Tryptophan synthase b subunit (TRPS) gene, responsible for the synthesis of the amino acid tryptophan whose biosynthetic pathway produces the hormone indole-3-acetic acid (IAA) [41], had also greater accumulation in needles from 1-year-old rootstock plants.…”

Section: Discussionsupporting

confidence: 68%

Changes in Gene Expression in Needles and Stems of <i>Pinus radiata</i> Rootstock Plants of Different Ontogenic Age

Álvarez¹,

Valledor²,

Sáez³

et al. 2016

AJPS

View full text Add to dashboard Cite

A major problem in forest clonal productivity is the loss of morphogenetic capability with the increasing age of plants. However, despite of the importance of loss of morphogenetic competence, very little research has been done about the underlying mechanisms involved in this process. For this reason, a gene expression analysis using dot blot technique was performed in needles and stems of 1-and 3-year old Pinus radiata rootstock plants with a proved decrease in morphogenetic competence. Needles of one year old rootstock plants showed a higher number of up-regulated in genes mainly corresponding to photosynthesis and protein synthesis, degradation and modification, reflecting a higher number of active pathways in younger hedges, contrary to the older ones. Gene expression profiles found in stems are in agreement with those found in needles, indicating more active pathways in younger rootstock plants than in older ones. Several transcripts regulating transcription and translation were up-regulated in young competent tissues. Three-year-old stems presented an increase in the expression of an ethylene response factor, involved in plant organ senescence, indicating that pathways involved in senescence and ageing might inhibit the adventitious root formation, as in the older cuttings.

show abstract

“…Putrescine is synthesized from arginine and ornithine by arginine and ornithine decarboxylase and is then transformed to spermidine and spermine through the respective aminopropyl transferases42. S-adenosylmethionine (SAM) plays a vital role in physiological process, and decarboxylated SAM acts as an aminopropyl donor43. SAM connects methionine (Met) and polyamine metabolism and is metabolized to 1-aminocyclo-propane-1-carboxylic acid (ACC), S-methylmethionine (SMM) and 5-methylthioadenosine (MTA).…”

Section: Resultsmentioning

confidence: 99%

Comprehensive investigation of tobacco leaves during natural early senescence via multi-platform metabolomics analyses

Zhao

et al. 2016

Sci Rep

View full text Add to dashboard Cite

Senescence is the final stage of leaf growth and development. Many different physiological activities occur during this process. A comprehensive metabolomics analysis of tobacco middle leaves at 5 different developmental stages was implemented through multi-platform methods based on liquid chromatography, capillary electrophoresis and gas chromatography coupled with mass spectrometry. In total, 412 metabolites were identified, including pigments, sterols, lipids, amino acids, polyamines, sugars and secondary metabolites. Dramatic metabolic changes were observed. Firstly, membrane degradation and chlorophyll down-regulation occurred after the 50% flower bud stage. Levels of major membrane lipids decreased, including those of the glycolipids in chloroplast thylakoids and phospholipids in membrane envelopes. Clear decreases in free sterols and acylated sterol glucosides were detected along with the accumulation of sterol esters. The accumulation of alkaloids was found. The amino acid levels were significantly decreased, particularly those of N-rich amino acids (glutamine and asparagine), thus reflecting N translocation. Subsequently, the antioxidant system was activated. Sugar alcohols and polyphenols accumulated when the lower leaves turned yellow. These results comprehensively revealed the metabolic changes that occur during tobacco leaf development and senescence under natural conditions.

show abstract

The Genetic Reprogramming of Polyamine Homeostasis During the Functional Assembly, Maturation, and Senescence-Specific Decline of the Photosynthetic Apparatus in Hordeum vulgare

Cited by 21 publications

References 71 publications

Water availability influences morphology, mycorrhizal associations, PSII efficiency and polyamine metabolism at early growth phase of Scots pine seedlings

Water availability influences morphology, mycorrhizal associations, PSII efficiency and polyamine metabolism at early growth phase of Scots pine seedlings

Changes in Gene Expression in Needles and Stems of <i>Pinus radiata</i> Rootstock Plants of Different Ontogenic Age

Comprehensive investigation of tobacco leaves during natural early senescence via multi-platform metabolomics analyses

Contact Info

Product

Resources

About

The Genetic Reprogramming of Polyamine Homeostasis During the Functional Assembly, Maturation, and Senescence-Specific Decline of the Photosynthetic Apparatus in Hordeum vulgare

Cited by 21 publications

References 71 publications

Water availability influences morphology, mycorrhizal associations, PSII efficiency and polyamine metabolism at early growth phase of Scots pine seedlings

Water availability influences morphology, mycorrhizal associations, PSII efficiency and polyamine metabolism at early growth phase of Scots pine seedlings

Changes in Gene Expression in Needles and Stems of &lt;i&gt;Pinus radiata&lt;/i&gt; Rootstock Plants of Different Ontogenic Age

Comprehensive investigation of tobacco leaves during natural early senescence via multi-platform metabolomics analyses

Contact Info

Product

Resources

About

Changes in Gene Expression in Needles and Stems of <i>Pinus radiata</i> Rootstock Plants of Different Ontogenic Age