Upregulation of <i><scp>DWARF</scp>27</i> is associated with increased strigolactone levels under sulfur deficiency in rice

Shindo, Masato; Shimomura, Koichiro; Yamaguchi, Shinjiro; Umehara, Mikihisa

doi:10.1002/pld3.50

Cited by 42 publications

(16 citation statements)

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“…57) In addition, in rice plants, sulfur deficiency increased SL levels via upregulation of D27, while the expression of other SL biosynthesis genes D10, D17, and OsMAX1 was unaffected. 60) 2.2.2. Effects of other hormones Auxin is a potent, positive regulator of SL biosynthesis.…”

Section: Regulation Of Sl Biosynthesismentioning

confidence: 99%

Recent progress in the chemistry and biochemistry of strigolactones

Yoneyama

2020

J. Pestic. Sci.

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Strigolactones (SLs) are plant secondary metabolites derived from carotenoids. SLs play important roles in the regulation of plant growth and development in planta and coordinate interactions between plants and other organisms including root parasitic plants, and symbiotic and pathogenic microbes in the rhizosphere. In the 50 years since the discovery of the first SL, strigol, our knowledge about the chemistry and biochemistry of SLs has advanced explosively, especially over the last two decades. In this review, recent advances in the chemistry and biology of SLs are summarized and possible future outcomes are discussed.

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Section: Regulation Of Sl Biosynthesismentioning

confidence: 99%

Recent progress in the chemistry and biochemistry of strigolactones

Yoneyama

2020

J. Pestic. Sci.

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“…A tube containing no insect was used as the control. All media contained 1 mM 2-( N -morpholino) ethanesulfonic acid buffer (pH 5.7) [ 33 ]. Four days later, the length of seedlings was measured, n = 5.…”

Section: Methodsmentioning

confidence: 99%

Orange Leafhopper Cicadulina bipunctata Feeding Induces Gall Formation Nitrogen Dependently and Regulates Gibberellin Signaling

Miyazaki

Kasahara

Matsui

et al. 2020

Plants

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Orange leafhopper Cicadulina bipunctata feeding induces wallaby ear symptoms, namely growth suppression and gall formation characterized by severe swelling of leaf veins, on various Poaceae, thereby leading to low crop yields. Here, we investigated the development of wallaby ear symptoms on rice seedlings due to C. bipunctata feeding. After confirming that C. bipunctata feeding induces growth suppression and gall formation on rice seedlings, we further demonstrated that gall formation score decreased with decreasing levels of nitrogen in the medium and that C. bipunctata feeding induces the expression levels of nitrogen transporter genes. These gene expression changes may participate in the nutrient accumulation observed in galled tissues and in gall formation. In addition, these expression changes should induce growth promotion but the inhibition of gibberellin signaling by C. bipunctata feeding might be the reason why growth is suppressed. Treatment with plant growth regulators did not affect gall formation, suggesting the existence of a complex gall formation mechanism by C. bipunctata feeding.

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“…BR also inhibit proliferation of abaxial sclerenchyma cells by controlling U-type cyclin CYC U4;1 (Sun et al, 2015). Gibberellin stimulates cell elongation, and interacts with BR signaling by several regulators (Shimada et al, 2006;Wang et al, 2009). Gibberellin reduced the leaf angle by inhibiting BR response, demonstrating that gibberellin is a negative regulator of lamina inclination (Tong et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Strigolactones Decrease Leaf Angle in Response to Nutrient Deficiencies in Rice

et al. 2020

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Strigolactones (SLs) are a class of plant hormones that are synthesized from b-carotene through sequential reactions catalyzed by DWARF (D) 27, D17, D10, and OsMORE AXILLARY GROWTH (MAX) 1 in rice (Oryza sativa L.). In rice, endogenous SL levels increase in response to deficiency of nitrogen, phosphate, or sulfate (−N, −P, or −S). Rice SL mutants show increased lamina joint (LJ) angle as well as dwarfism, delayed leaf senescence, and enhanced shoot branching. The LJ angle is an important trait that determines plant architecture. To evaluate the effect of endogenous SLs on LJ angle in rice, we measured LJ angle and analyzed the expression of SL-biosynthesis genes under macronutrient deficiencies. In the "Shiokari" background, LJ angle was significantly larger in SL mutants than in the wild-type (WT). In WT and SL-biosynthesis mutants, direct treatment with the SL synthetic analog GR24 decreased the LJ angle. In WT, deficiency of N, P, or S, but not of K, Ca, Mg, or Fe decreased LJ angle. In SL mutants, deficiency of N, P, or S had no such effect. We analyzed the time course of SL-related gene expression in the LJ of WT deficient in N, P, or S, and found that expression of SL-biosynthesis genes increased 2 or 3 days after the onset of deficiency. Expression levels of both the SLbiosynthesis and signaling genes was particularly strongly increased under −P. Rice cultivars "Nipponbare", "Norin 8", and "Kasalath" had larger LJ angle than "Shiokari", interestingly with no significant differences between WT and SL mutants. In "Nipponbare", endogenous SL levels increased and the LJ angle was decreased under −N and −P. These results indicate that SL levels increased in response to nutrient deficiencies, and that elevated endogenous SLs might negatively regulate leaf angle in rice.

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Upregulation of DWARF27 is associated with increased strigolactone levels under sulfur deficiency in rice

Cited by 42 publications

References 50 publications

Recent progress in the chemistry and biochemistry of strigolactones

Recent progress in the chemistry and biochemistry of strigolactones

Orange Leafhopper Cicadulina bipunctata Feeding Induces Gall Formation Nitrogen Dependently and Regulates Gibberellin Signaling

Strigolactones Decrease Leaf Angle in Response to Nutrient Deficiencies in Rice

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