Molecular cloning and expression of a cucumber (Cucumis sativus L.) heme oxygenase-1 gene, CsHO1, which is involved in adventitious root formation

Li, Mei-Yue; Cao, Zhipeng; Shen, Wenbiao; Chen, Jin

doi:10.1016/j.gene.2011.07.008

Cited by 22 publications

(6 citation statements)

References 50 publications

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“…In both animals and plants, HO is regarded as the primary source for endogenous CO production, which is an intermediate metabolite in the Fe branch of the tetrapyrrole metabolic pathway 31 and is derived from the decomposition of heme by HO-1. In this study, we demonstrated that the activity of HO-1 is positively associated with AR formation, consistent with a previous report that exogenous hematin induces HO-1 activity and increases AR numbers in cuttings 32 . Based on the change in HO activity in rf , the fact that CO is the major product of heme/HO, and the evidence that CO acts as the signaling molecule to induce AR formation, we speculate that CO is likely functional in the heme/HO pathway to induce AR initiation in rf mutants.…”

Section: Discussionsupporting

confidence: 93%

AUREA maintains the balance between chlorophyll synthesis and adventitious root formation in tomato

Jie

et al. 2020

Hortic Res

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Flooding tolerance is an important trait for tomato breeding. In this study, we obtained a recessive mutant exhibiting highly enhanced submergence resistance. Phenotypical analyses showed that this resistant to flooding (rf) mutant displays slightly chlorotic leaves and spontaneous initiation of adventitious roots (ARs) on stems. The mutation was mapped to the phytochromobilin synthase gene AUREA (AU), in which a single amino acid substitution from asparagine to tyrosine occurred. In addition to the classic function of AU in phytochrome and chlorophyll biogenesis in leaves, we uncovered its novel role in mediating AR formation on stems. We further observed temporal coincidence of the two phenotypes in the rf mutant: chlorosis and spontaneous AR formation and revealed that AU functions by maintaining heme homeostasis. Interestingly, our grafting results suggest that heme might play roles in AR initiation via long-distance transport from leaves to stems. Our results present genetic evidence for the involvement of the AU–heme oxygenase-1–heme pathway in AR initiation in tomato. As fruit production and yield in the rf mutant are minimally impacted, the mutation identified in this study may provide a target for biotechnological renovation of tomato germplasm in future breeding.

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Section: Discussionsupporting

confidence: 93%

AUREA maintains the balance between chlorophyll synthesis and adventitious root formation in tomato

Jie

et al. 2020

Hortic Res

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“…Our former results (Xu et al, 2006;Xuan et al, 2008;Li et al, 2011) discovered that exogenous hematin or hemin, two HO-1 inducers applied in animal and plant kingdoms (Lamar et al, 1996;Xuan et al, 2007), induced adventitious root formation in mung bean and cucumber explants, respectively. Herein, Fig.…”

Section: Effects Of Hemin On Adventitious Rooting and Endogenous No Pmentioning

confidence: 90%

Nitric oxide is involved in hemin-induced cucumber adventitious rooting process

Xuan

et al. 2012

Journal of Plant Physiology

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“…4; Zhang et al, 2009;Li and Xue, 2010;Liao et al, 2010;Li et al, 2011). Zhang and others (2009) showed that hydrogen sulfide is produced 24 h after cutting, followed by auxin, followed by nitric oxide.…”

Section: Adventitious Root Initiationmentioning

confidence: 99%

The Physiology of Adventitious Roots

2015

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Adventitious roots are plant roots that form from any nonroot tissue and are produced both during normal development (crown roots on cereals and nodal roots on strawberry [Fragaria spp.]) and in response to stress conditions, such as flooding, nutrient deprivation, and wounding. They are important economically (for cuttings and food production), ecologically (environmental stress response), and for human existence (food production). To improve sustainable food production under environmentally extreme conditions, it is important to understand the adventitious root development of crops both in normal and stressed conditions. Therefore, understanding the regulation and physiology of adventitious root formation is critical for breeding programs. Recent work shows that different adventitious root types are regulated differently, and here, we propose clear definitions of these classes. We use three case studies to summarize the physiology of adventitious root development in response to flooding (case study 1), nutrient deficiency (case study 2), and wounding (case study 3).

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Molecular cloning and expression of a cucumber (Cucumis sativus L.) heme oxygenase-1 gene, CsHO1, which is involved in adventitious root formation

Cited by 22 publications

References 50 publications

AUREA maintains the balance between chlorophyll synthesis and adventitious root formation in tomato

AUREA maintains the balance between chlorophyll synthesis and adventitious root formation in tomato

Nitric oxide is involved in hemin-induced cucumber adventitious rooting process

The Physiology of Adventitious Roots

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