Suppressed expression of choline monooxygenase in sugar beet on the accumulation of glycine betaine

Yamada, Nana; Takahashi, Hiroyuki; Kitou, Kunihide; Sahashi, Kosuke; Tamagake, Hideto; Tanaka, Yoshito; Takabe, Teruhiro

doi:10.1016/j.plaphy.2015.06.014

Cited by 32 publications

(17 citation statements)

References 18 publications

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“…trehalose, raffinose), and ions (e.g. K + ) (Pommerrenig et al ; Boriboonkaset et al ; Henry et al ; Slama et al ; Yamada et al ). Some of these osmolytes accumulate across a wide range of plant species under salt stress, such as proline, glycine betaine, mannitol, glucose, and fructose.…”

Section: Osmotic Stress Signaling Pathwaysmentioning

confidence: 99%

Unraveling salt stress signaling in plants

Yang

Guo

2018

JIPB

733

481

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Salt stress is a major environmental factor limiting plant growth and productivity. A better understanding of the mechanisms mediating salt resistance will help researchers design ways to improve crop performance under adverse environmental conditions. Salt stress can lead to ionic stress, osmotic stress and secondary stresses, particularly oxidative stress, in plants. Therefore, to adapt to salt stress, plants rely on signals and pathways that re-establish cellular ionic, osmotic, and reactive oxygen species (ROS) homeostasis. Over the past two decades, genetic and biochemical analyses have revealed several core stress signaling pathways that participate in salt resistance. The Salt Overly Sensitive signaling pathway plays a key role in maintaining ionic homeostasis, via extruding sodium ions into the apoplast. Mitogen-activated protein kinase cascades mediate ionic, osmotic, and ROS homeostasis. SnRK2 (sucrose nonfermenting 1-related protein kinase 2) proteins are involved in maintaining osmotic homeostasis. In this review, we discuss recent progress in identifying the components and pathways involved in the plant's response to salt stress and their regulatory mechanisms. We also review progress in identifying sensors involved in salt-induced stress signaling in plants.

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Section: Osmotic Stress Signaling Pathwaysmentioning

confidence: 99%

Unraveling salt stress signaling in plants

Yang

Guo

2018

JIPB

733

481

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“…This protein is unique to eukaryotic photosynthetic organisms as it is not found in cyanobacteria, supporting a recent evolution of this enzyme. No Arabidopsis mutant has been characterized so far, but antisense CMO transgenic sugar beet plants are susceptible to salt stress [131]. …”

Section: Functional Diversity Among Client Fe–s Proteins In Plastidsmentioning

confidence: 99%

Roles and maturation of iron–sulfur proteins in plastids

et al. 2018

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One reason why iron is an essential element for most organisms is its presence in prosthetic groups such as hemes or iron–sulfur (Fe–S) clusters, which are notably required for electron transfer reactions. As an organelle with an intense metabolism in plants, chloroplast relies on many Fe–S proteins. This includes those present in the electron transfer chain which will be, in fact, essential for most other metabolic processes occurring in chloroplasts, e.g., carbon fixation, nitrogen and sulfur assimilation, pigment, amino acid, and vitamin biosynthetic pathways to cite only a few examples. The maturation of these Fe–S proteins requires a complex and specific machinery named SUF (sulfur mobilisation). The assembly process can be split in two major steps, (1) the de novo assembly on scaffold proteins which requires ATP, iron and sulfur atoms, electrons, and thus the concerted action of several proteins forming early acting assembly complexes, and (2) the transfer of the preformed Fe–S cluster to client proteins using a set of late-acting maturation factors. Similar machineries, having in common these basic principles, are present in the cytosol and in mitochondria. This review focuses on the currently known molecular details concerning the assembly and roles of Fe–S proteins in plastids.

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“…When subject to drought, many higher plants respond by increasing the accumulation of glycine betaine (GB) (Chen and Murata 2011, Ashraf & Foolad, ; Holmström, Somersalo, Mandal, Palva, & Welin, ), a quaternary ammonium compound found primarily in plants that grow in dry environments. The functions of GB have been studied extensively in higher plants, such as spinach and sugar beet (Shirasawa, Takabe, Takabe, & Kishitani, ; Yamada et al., ). In general, GB is synthesized from choline by a two‐step oxidation reaction: the first oxidation is catalysed by choline monooxygenase (CMO) (Sakamoto & Murata, ), and the second oxidation is catalysed by NAD + ‐dependant betaine aldehyde dehydrogenase (BADH).…”

Section: Introductionmentioning

confidence: 99%

“…primarily in plants that grow in dry environments. The functions of GB have been studied extensively in higher plants, such as spinach and sugar beet (Shirasawa, Takabe, Takabe, & Kishitani, 2006;Yamada et al, 2015). In general, GB is synthesized from choline by a two-step oxidation reaction: the first oxidation is catalysed by choline monooxygenase (CMO) (Sakamoto & Murata, 2000), and the second oxidation is catalysed by NAD + -dependant betaine aldehyde dehydrogenase (BADH).…”

mentioning

confidence: 99%

“…In general, GB is synthesized from choline by a two-step oxidation reaction: the first oxidation is catalysed by choline monooxygenase (CMO) (Sakamoto & Murata, 2000), and the second oxidation is catalysed by NAD + -dependant betaine aldehyde dehydrogenase (BADH). To date, BADH has been purified from several species, and BADH has been cloned from spinach, sugar beet, barley and rice (Shirasawa et al, 2006;Yamada et al, 2015).…”

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confidence: 99%

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Transgenic soybeans expressing betaine aldehyde dehydrogenase from Atriplex canescens show increased drought tolerance

2017

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Betaine aldehyde dehydrogenase (BADH) catalyses the oxidation of betaine aldehyde to glycine betaine. To test whether BADH can increase drought tolerance in soybean (Glycine max), BADH from the drought‐tolerant plant Atriplex canescens (AcBADH) was introduced into the soybean cultivar ‘Jinong 17’ by Agrobacterium‐mediated cotyledon transformation. Eight independent AcBADH transgenic lines were subjected to drought stress. As expected, AcBADH was expressed in transgenic soybean leaves and not in the control. In transgenic plants, AcBADH expression increased following drought treatment. Under osmotic stress, the germination index was 6%–17% higher in the transgenic lines than in the control. Using a randomized block design, we measured drought‐related physiological indices and yield traits. The proline content in AcBADH transgenic soybeans increased by 12.5%–16.6%, peroxidase activity increased by 1%–7%, dry weight of plant increased by 15%–20% and malondialdehyde contents decreased by 1.5%–13%, compared to the control. Under drought conditions, two of the eight transgenic soybean lines had higher yields than the control, with increases of 7.59%–8.84%. Therefore, transgenic expression of AcBADH may provide a promising strategy to engineer drought tolerance without adverse consequences.

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Suppressed expression of choline monooxygenase in sugar beet on the accumulation of glycine betaine

Cited by 32 publications

References 18 publications

Unraveling salt stress signaling in plants

Unraveling salt stress signaling in plants

Roles and maturation of iron–sulfur proteins in plastids

Transgenic soybeans expressing betaine aldehyde dehydrogenase from Atriplex canescens show increased drought tolerance

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