The specificity and genetic background of the rye (Secale cereale L.) tissue culture response

Targońska, Małgorzata; Hromada-Judycka, Aneta; Bolibok-Brągoszewska, Hanna; Rakoczy-Trojanowska, Monika

doi:10.1007/s00299-012-1342-9

Cited by 26 publications

(16 citation statements)

References 57 publications

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“…For instance, maize contains 23 JAZ proteins, which is nearly twice as many as tobacco [157,158]. This suggests involvement in other hormone signaling pathways or abiotic stress tolerance [387]. Furthermore, the NAC transcription factor RIM1, a negative regulator of JA biosynthesis in rice, has not yet been identified in Arabidopsis and may thus be specific to monocots [387,388].…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

“…This suggests involvement in other hormone signaling pathways or abiotic stress tolerance [387]. Furthermore, the NAC transcription factor RIM1, a negative regulator of JA biosynthesis in rice, has not yet been identified in Arabidopsis and may thus be specific to monocots [387,388]. Finally, systemin and systemin-like peptides are found only within Solanaceae and are absent in monocots.…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

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Plant Defense against Insect Herbivores

Fürstenberg-Hägg

Zagrobelny

Bak

2013

IJMS

683

459

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Plants have been interacting with insects for several hundred million years, leading to complex defense approaches against various insect feeding strategies. Some defenses are constitutive while others are induced, although the insecticidal defense compound or protein classes are often similar. Insect herbivory induce several internal signals from the wounded tissues, including calcium ion fluxes, phosphorylation cascades and systemic- and jasmonate signaling. These are perceived in undamaged tissues, which thereafter reinforce their defense by producing different, mostly low molecular weight, defense compounds. These bioactive specialized plant defense compounds may repel or intoxicate insects, while defense proteins often interfere with their digestion. Volatiles are released upon herbivory to repel herbivores, attract predators or for communication between leaves or plants, and to induce defense responses. Plants also apply morphological features like waxes, trichomes and latices to make the feeding more difficult for the insects. Extrafloral nectar, food bodies and nesting or refuge sites are produced to accommodate and feed the predators of the herbivores. Meanwhile, herbivorous insects have adapted to resist plant defenses, and in some cases even sequester the compounds and reuse them in their own defense. Both plant defense and insect adaptation involve metabolic costs, so most plant-insect interactions reach a stand-off, where both host and herbivore survive although their development is suboptimal.

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Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Plant Defense against Insect Herbivores

Fürstenberg-Hägg

Zagrobelny

Bak

2013

IJMS

683

459

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“…In Arabidopsis , specific HATs or HDACs are known to acetylate or deacetylate certain lysine residues (Figure 1) such as members from GNAT/MYST class - AtHAG1/AtGCN5 acetylates H3K9, H3K14, and H3K27, AtHAM1/2 acetylates H4K5, and AtHAG3 acetylates H3K14. On the other hand, HDACs include (1) HD2 (HISTONE DEACETYLASE 2), (2) SIR2 (SILENT INFORMATION REGULATOR PROTEIN 2), and (3) HDAs (HISTONE DEACETYLASE) class (Class I – III) [22–24]. Amongst them, AtHDA6 and AtHDA19/HD1 from the HDAs class I are the best-studied HDACs which are shown to be involved in removal of a few of the acetylation marks on H3 and H4 tails [25–27].…”

Section: Introductionmentioning

confidence: 99%

An RNA-Seq Transcriptome Analysis of Histone Modifiers and RNA Silencing Genes in Soybean during Floral Initiation Process

2013

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Epigenetics has been recognised to play vital roles in many plant developmental processes, including floral initiation through the epigenetic regulation of gene expression. The histone modifying proteins that mediate these modifications involve the SET domain-containing histone methyltransferases, JmjC domain-containing demethylase, acetylases and deacetylases. In addition, RNA interference (RNAi)-associated genes are also involved in epigenetic regulation via RNA-directed DNA methylation and post-transcriptional gene silencing. Soybean, a major crop legume, requires a short day to induce flowering. How histone modifications regulate the plant response to external cues that initiate flowering is still largely unknown. Here, we used RNA-seq to address the dynamics of transcripts that are potentially involved in the epigenetic programming and RNAi mediated gene silencing during the floral initiation of soybean. Soybean is a paleopolyploid that has been subjected to at least two rounds of whole genome duplication events. We report that the expanded genomic repertoire of histone modifiers and RNA silencing genes in soybean includes 14 histone acetyltransferases, 24 histone deacetylases, 47 histone methyltransferases, 15 protein arginine methyltransferases, 24 JmjC domain-containing demethylases and 47 RNAi-associated genes. To investigate the role of these histone modifiers and RNA silencing genes during floral initiation, we compared the transcriptional dynamics of the leaf and shoot apical meristem at different time points after a short-day treatment. Our data reveal that the extensive activation of genes that are usually involved in the epigenetic programming and RNAi gene silencing in the soybean shoot apical meristem are reprogrammed for floral development following an exposure to inductive conditions.

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“…The biggest number of OTLs connected with AR/100A were localized in subgenome R and the positive effect originated from 'Modus' allele. It could be connected with general recalcitrance in regard to the in vitro culture response in rye (Ma et al 2003;Ma and Pulli 2004;Targońska et al 2013). Generally problems associated with rye anther and microspore culture are poor embryogenic callus induction, low green plant regeneration and high proportion of albinos (Ma and Pulli 2004).…”

Section: Localization Of Genomic Regions Controlling Albino Plant Regmentioning

confidence: 99%

Identification of QTLs associated with albino plant formation and some new facts concerning green versus albino ratio determinants in triticale (×Triticosecale Wittm.) anther culture

et al. 2015

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High frequency of albino haploids/doubled haploids (DHs), regenerated in androgenic cultures is one of the major obstacles that limit incorporation of DHs technology into cereal breeding programs. Therefore, quantitative trait loci (QTL) associated with albino plant production in triticale anther cultures were analyzed using the population of 90 DH lines derived from F1 cross 'Saka 3006' 9 'Modus'. Composite interval mapping (CIM) and single marker analysis (SMA) in Windows QTL Cartographer ver 2.5 were used to localize the major QTLs. CIM method revealed seven QTLs with LOD scores between 2.9 and 5.6 on five chromosomes from B to R subgenomes (3B, 4B, 4R, 5R and 7R). Effects of all QTLs explained 8.3-17.6 % of the phenotypic variation and were confirmed by SMA analysis. Additionally SMA revealed another seven markers on chromosomes: 2AL.2BL, 3B, 2BS.6AL, 2RS.3R and 4R associated with QTL for albino plant regeneration (p \ 0.01). The additional experiment with ten DH lines varied significantly in their androgenic responsiveness was conducted to analyze the changes in the level of oxidative stress, antioxidative system activity and endogenous hormonal balance associated with androgenesis-inducing low temperature stress treatment (3 weeks at 4°C). The correlation analysis between albino/green plant regeneration ability and analyzed traits were performed by using Spearman Rank test (p B 0.05). Revealed associations may suggest that some level of oxidative stress is necessary for transition from a non-photosynthetic proplastids to the functional chloroplasts. On the other hand, the efficient antioxidative enzyme system and endogenous hormonal balance are also very important. Key message Fourteen chromosome regions were indicated to control albino plant formation during triticale anther culture. Additionally, reactive oxygen species (ROS) generation, antioxidative system activity and hormonal balance were discussed as determinants in androgenesis.

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The specificity and genetic background of the rye (Secale cereale L.) tissue culture response

Cited by 26 publications

References 57 publications

Plant Defense against Insect Herbivores

Plant Defense against Insect Herbivores

An RNA-Seq Transcriptome Analysis of Histone Modifiers and RNA Silencing Genes in Soybean during Floral Initiation Process

Identification of QTLs associated with albino plant formation and some new facts concerning green versus albino ratio determinants in triticale (×Triticosecale Wittm.) anther culture

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