The flexible interrelation between AOX respiratory pathway and photosynthesis in rice leaves

Feng, Hongmei; Li, Hongyu; X, Li; Duan, Jiangong; Huang, Liang; Zhi, Dejuan; Ma, Jun

doi:10.1016/j.plaphy.2007.01.008

Cited by 18 publications

(27 citation statements)

References 38 publications

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“…In the present experiment, the length of the treatment was considerably shorter (3 h) and the decrease in leaf AOX capacity could be attributed to the darkness during anoxia rather than to a lack of oxygen ( Figure 3B and C), probably through repression of light-regulated genes. A diurnal rhythm of AOX protein and/or AOX transcript, with the lowest value in the darkness and the highest in the light, has been found in potato, rice, tobacco and cucumber (Svensson and Rasmusson, 2001;Dutilleul et al, 2003;Feng et al, 2007;Juszczuk et al, 2007). The lack of an increase in AOX capacity in barley leaves after 1 h post-anoxia in the light was likely due to the light period being too short, similar to the observations of Escobar et al (2004).…”

Section: Discussionsupporting

confidence: 59%

Differential response of antioxidant systems in leaves and roots of barley subjected to anoxia and post-anoxia

Skutnik

Rychter

2009

Journal of Plant Physiology

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Section: Discussionsupporting

confidence: 59%

Differential response of antioxidant systems in leaves and roots of barley subjected to anoxia and post-anoxia

Skutnik

Rychter

2009

Journal of Plant Physiology

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“…These observations indicated that light up-regulates the expression of AOX by changes of the protein and mRNA abundance. Furthermore, in many studies, high or constant light further increased the expression levels of AOX genes [6,44]. It is well known that light, particularly excess light stress, can increase the leakage of electrons from the photosynthetic electron transport chain, which can reduce molecular oxygen to ROS [57].…”

Section: Light Signalsmentioning

confidence: 99%

Expression and signal regulation of the alternative oxidase genes under abiotic stresses

Hong¹,

Guan²,

Sun³

et al. 2013

ABBS

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Plants in their natural environment frequently face various abiotic stresses, such as drought, high salinity, and chilling. Plant mitochondria contain an alternative oxidase (AOX), which is encoded by a small family of nuclear genes. AOX genes have been shown to be highly responsive to abiotic stresses. Using transgenic plants with varying levels of AOX expression, it has been confirmed that AOX genes are important for abiotic stress tolerance. Although the roles of AOX under abiotic stresses have been extensively studied and there are several excellent reviews on this topic, the differential expression patterns of the AOX gene family members and the signal regulation of AOX gene(s) under abiotic stresses have not been extensively summarized. Here, we review and discuss the current progress of these two important issues.

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“…Preparation of the special probes for AOX1a Primer 1 and primer 2 (P1:5'-GATGTTTGTCTACTG CCGAGGATTT-3'; P2: 5'-ATGTAGTATATATAACTCA GCTGCC-3') were used to obtain a specific probe for AOX1a by polymerase chain reaction (PCR) according to the previous works (Saika et al 2002;Feng et al 2007). The rice total DNA was extracted from the leaves as template.…”

Section: Respiration Of Leavesmentioning

confidence: 99%

Salt stress-induced expression of rice AOX1a is mediated through an accumulation of hydrogen peroxide

Feng

Wang

et al. 2010

Biologia

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Treatment with 300 mM NaCl increased the capacity of the alternative respiratory pathway and induced the expression of AOX1a of the leaves of rice (Oryza sativa L.) seedlings. A significant increase in the content of hydrogen peroxide (H2O2) was observed in rice leaves treated with 300 mM NaCl. However, NaCl at 150 mM did not significantly affect the capacity of the alternative respiratory pathway, the content of H2O2, and the transcript level of AOX1a. Exogenous application of H2O2 enhanced the levels of the capacity of the alternative respiratory pathway and AOX1a expression. The accumulation of H2O2 in rice leaves in response to 300 mM NaCl was inhibited by the pretreatment with dimethylthiourea (DMTU, scavenger of H2O2). This treatment also suppressed the induction of AOX1a expression and the increase in the capacity of the alternative respiratory pathway under 300 mM NaCl stress. Moreover, the salt-stressed (300 mM NaCl) seedlings pretreated with 1 mM salicylhydroxamic acid (SHAM, a special inhibitor of alternative oxidase) had higher level of H2O2 production than the seedlings either subjected to 300 mM NaCl stress or SHAM treatment alone did. These observations suggest that the expression of AOX1a in response to higher salt stress is mediated through an accumulation of H2O2 and alternative oxidase could play a role in antioxidant protection under the condition of higher salt stress.

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The flexible interrelation between AOX respiratory pathway and photosynthesis in rice leaves

Cited by 18 publications

References 38 publications

Differential response of antioxidant systems in leaves and roots of barley subjected to anoxia and post-anoxia

Differential response of antioxidant systems in leaves and roots of barley subjected to anoxia and post-anoxia

Expression and signal regulation of the alternative oxidase genes under abiotic stresses

Salt stress-induced expression of rice AOX1a is mediated through an accumulation of hydrogen peroxide

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