Exogenous melatonin improved the growth and development of naked oat seedlings under cadmium stress

Ectopic overexpression of mulberry MnT5H2 enhances melatonin production and salt tolerance in tobacco

“…Interestingly, transgenic tobacco T1 seeds did not exhibit higher germination rates, but after germination transgenic tobacco seedlings grew significantly better than WT under salt stress, as evidenced by the fact that transgenic tobacco seedlings could grow slowly in salt-stressed media, but WT seedlings almost stopped growing (Figure 7). Exogenous melatonin has been reported to promote seedling growth and to promote seed germination Nabaei and Amooaghaie, 2019;Li et al, 2022;Wang J. et al, 2022). This study found that the promotion of seedling growth by MnT5H2 may be related to the increased synthesis of endogenous melatonin.…”

“…Phytomelatonin was first discovered in tomatoes and a few other edible crops in 1995 (Dubbels et al, 1995). Research has shown that melatonin is a hormone that acts in many physiological aspects of plants, including seed germination, root organogenesis, flowering, fruit ripening, and stomatal immunity Zhang et al, 2015;Yang et al, 2021b;Wang K. et al, 2022). Melatonin also plays an indispensable role in alleviating plants ' bacterial, fungal, and viral diseases (Yang et al, 2021a;Zeng et al, 2022).…”

Effects of exogenous melatonin on the growth and cadmium accumulation of lettuce under cadmium‐stress conditions

“…Exogenous melatonin has been shown to alleviate Cd stress in Brassica napus by enhancing APX, CAT, SOD, and POD activities under Cd stress to balance the accumulation of H 2 O 2 and MDA 33 . In tomato plants, MT has been shown to reduce electrolyte leakage of Cd into seedling cells, increase the antioxidant enzyme activity under Cd stress, and promote the synthesis of glutathione, thus promoting resistant to Cd 11 . The present study found that Cd stress increased the SOD, POD, and CAT activities of both “Hong Feng” and “Luo Ma” lettuce (Table 5).…”

“…8,9 Such as Cai et al 10 found that MT synthesis in tomato is regulated by HsfA1a under Cd stress and is involved in the response process alleviating Cd stress. Wang et al 11 showed that the application of exogenous MT could not only significantly increase the plant height, fresh weight, chlorophyll and proline content of naked oat, but also affect the MAPK family LOX, PDX and Asmap1 and Gene expression of NAC and WRKY1 in the TFS family promotes the growth and development of naked oat seedlings. In addition, it has been shown that treatment with 100 μmol/L MT significantly increased plant biomass and photosynthetic parameters and significantly reduced Cd content in Chinese cabbage seedlings compared with control plants under Cd stress.…”

Melatonin Involved in Protective Effects against Cadmium Stress in Wolffia arrhiza

“…Moreover, MT acts as a direct scavenger of reactive oxygen species (ROS) [ 16 ]. Several studies demonstrate the positive role of MT in response to Cd stress [ 17 , 18 ]. For example, exogenous MT mitigates Cd toxicity by increasing PC and antioxidant levels in tomatoes [ 19 ].…”