Physiological and biochemical changes in different sugar beet genotypes infected with root-knot nematode

Korayem, A. M.; El-Bassiouny, H. M. S.; El-Monem, A. A. A.; Mohamed, Mona A.

doi:10.1007/s11738-012-0983-1

Cited by 31 publications

(15 citation statements)

References 50 publications

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“…Our work also revealed an enhancement in the oxidative damage in nematode infected S. lycopersicum seedlings in the form of increased oxidative stress markers in terms of MDA and H 2 O 2 content in M. incognita stressed plants. A similar increase in the level of MDA was also reported in case of sugar beet plants inoculated with nematodes [ 63 ]. Likewise, enhancement in the H 2 O 2 content was also assessed by Sharma and Sharma [ 64 ] in tomato plants.…”

Section: Discussionsupporting

confidence: 84%

Insights into the Role of Streptomyces hydrogenans as the Plant Growth Promoter, Photosynthetic Pigment Enhancer and Biocontrol Agent against Meloidogyne incognita in Solanum lycopersicum Seedlings

Sharma

Khanna

Bhardwaj

et al. 2020

Plants

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Root-knot nematodes (RKN), Meloidogyne sp. hinders functioning of crops and causes global losses in terms of productivity and yield. Meloidogyne sp. are microscopic, obligatory endoparasites with ubiquitous distribution in different parts of the world. Taking into consideration these aspects, the present study was conducted to explore nematicidal activity of the Streptomyces hydrogenans strain DH-16 against M. incognita to regulate its pathogenicity in plants. In-vitro experimentation revealed that pretreated seeds with solvent and culture supernatant lowered root galls in infested plants and promoted growth of Solanum lycopersicum seedlings, revealed through the morphological analysis. Additionally, antioxidative defense responses were induced with microbes. However, oxidative stress markers were considerably reduced after microbial inoculations. Apart from this, secondary metabolites were assessed and modulated in RKN infested plants on microbial supplementations. Confocal studies evaluated glutathione accumulation within root apices and its enhancement was directly proportional to defense responses. Therefore, the current study concluded the role of S. hydrogenans in stimulating antioxidant potential against RKN along with growth promoting aids. Thus, the outcome of the current study endorses that metabolites produced by S. hydrogenans can be used as safe biocontrol agents against M. incognita and also as plant growth promoting agents.

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Section: Discussionsupporting

confidence: 84%

Insights into the Role of Streptomyces hydrogenans as the Plant Growth Promoter, Photosynthetic Pigment Enhancer and Biocontrol Agent against Meloidogyne incognita in Solanum lycopersicum Seedlings

Sharma

Khanna

Bhardwaj

et al. 2020

Plants

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“…Chlorophyll a, b and carotenoides were reduced in all parts of infected turnip plant as compared to control and significant difference was found between them (Table 8). Our results are in accordance with the findings of earlier researchers who stated that chlorophyll was reduced due to root-knot-nematode incidence (Korayem et al, 2012). Table 8.…”

Section: Chlorophyll a B And Carotenoidessupporting

confidence: 93%

Impact of nematode infestation on nutritional quality of some underground vegetables in Pakistan

Israr¹

2018

Pak. J. Nematol.

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During the present investigation the nutritional quality of underground vegetables infected by root-knot nematode (Meloidogyne incognita) was evaluated. It was observed that physiological and biochemical changes occurred due to the invasion of root-knot nematodes in the studied vegetables. Results show that there was a significant difference in rootknot development and reproduction in infected and un-infected host plants. Data indicates that highest reproduction rate and root-knot index was observed in vegetable plants infected with root-knot nematodes after three months as compared to un-infected (control). The physiological parameters as well as biochemical contents showed significant difference in different growth criteria and amount of nutrients between infected host plants as compared to un-infected plants (control). Growth parameters of studied vegetable plants viz., fresh and dry weight and water content were decreased by the infection of root-knot nematode as compared to un-infected (control) plants. Similarly root-knot nematode decreased the host nutrients contents viz., total carbohydrates, total soluble sugars, total protein, total phenols and amino acids. Chlorophyll a, chlorophyll b and carotenoids also decreased in nematode infected plants as compared to control. This study gave the fair report towards nutritional quality because no significant work has been done so far on this aspect in Pakistan.

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“…In the present study, the two cultivars examined respond differently to LiCl stress, with BARI-401 having reduced TPC compared to control treatment, in contrast to Spunta which does not vary (Figure 1a). Antioxidant phenolic compounds play a role as scavengers of ROS in plants [41] and can help provide resistance against both biotic and abiotic stresses [42,43]. Previous studies have observed that high concentration of salts in media have an adverse effect on the concentration of phenolic compounds in two wild relatives of potato, S. stoloniferum and S. bulbosum [39], and in Capsicum annuum [44].…”

Section: Discussionmentioning

confidence: 99%

Metabolomic and Biochemical Analysis of Two Potato (Solanum tuberosum L.) Cultivars Exposed to In Vitro Osmotic and Salt Stresses

Hamooh

Sattar

Wellman

et al. 2021

Plants

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Globally, many crop production areas are threatened by drought and salinity. Potato (Solanum tuberosum L.) is susceptible to these challenging environmental conditions. In this study, an in vitro approach was employed to compare the tolerance of potato cultivars ‘BARI-401’ (red skin) and ‘Spunta’ (yellow skin). To simulate ionic and osmotic stress, MS media was supplemented with lithium chloride (LiCl 20 mM) and mannitol (150 mM). GC-MS and spectrophotometry techniques were used to determine metabolite accumulation. Other biochemical properties, such as total phenols concentration (TPC), total flavonoids concentration (TFC), antioxidant capacity (DPPH free radical scavenging capacity), polyphenol oxidase (PPO), and peroxidase (POD) activities, were also measured. The two cultivars respond differently to ionic and osmotic stress treatments, with Spunta accumulating more defensive metabolites in response, indicating a higher level of tolerance. While further investigation of the physiological and biochemical responses of these varieties to drought and salinity is required, the approach taken in this paper provides useful information prior to open field evaluation.

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Physiological and biochemical changes in different sugar beet genotypes infected with root-knot nematode

Cited by 31 publications

References 50 publications

Insights into the Role of Streptomyces hydrogenans as the Plant Growth Promoter, Photosynthetic Pigment Enhancer and Biocontrol Agent against Meloidogyne incognita in Solanum lycopersicum Seedlings

Insights into the Role of Streptomyces hydrogenans as the Plant Growth Promoter, Photosynthetic Pigment Enhancer and Biocontrol Agent against Meloidogyne incognita in Solanum lycopersicum Seedlings

Impact of nematode infestation on nutritional quality of some underground vegetables in Pakistan

Metabolomic and Biochemical Analysis of Two Potato (Solanum tuberosum L.) Cultivars Exposed to In Vitro Osmotic and Salt Stresses

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