Morpho-physiological profiling of rice (Oryza sativa) genotypes at germination stage with contrasting tolerance to salinity stress

Kruthika, N.; Jithesh, M. N.

doi:10.1007/s10265-023-01491-3

Cited by 3 publications

(2 citation statements)

References 67 publications

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“…7A and B). Many studies have shown that in plants, changes in soluble sugar content are often involved as signals in plant responses to abiotic and biological stresses [45][46][47][48][49][50]. We also found that the important gene SnRK1.1 in the sugar signaling pathway was significantly upregulated at the early stage after RKNs inoculation (Fig.…”

Section: Sugar Delivery Of Tomato Root At the Early Stage After Rkns ...supporting

confidence: 63%

Sugar delivery at the tomato root and root galls after Meloidogyne incognita infestation

Sun,

Lian,

Yang

et al. 2024

BMC Plant Biol

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Root-knot nematodes (RKNs) infect host plants and obtain nutrients such as sugars for their own development. Therefore, inhibiting the nutrient supply to RKNs may be an effective method for alleviating root-knot nematode disease. At present, the pathway by which sucrose is unloaded from the phloem cells to giant cells (GCs) in root galls and which genes related to sugar metabolism and transport play key roles in this process are unclear. In this study, we found that sugars could be unloaded into GCs only from neighboring phloem cells through the apoplastic pathway. With the development of galls, the contents of sucrose, fructose and glucose in the galls and adjacent tissue increased gradually. SUT1, SUT2, SWEET7a, STP10, SUS3 and SPS1 may provide sugar sources for GCs, while STP1, STP2 and STP12 may transport more sugar to phloem parenchyma cells. At the early stage of Meloidogyne incognita infestation, the sucrose content in tomato roots and leaves increased, while the glucose and fructose contents decreased. SWEET7a, SPS1, INV-INH1, INV-INH2, SUS1 and SUS3 likely play key roles in root sugar delivery. These results elucidated the pathway of sugar unloading in tomato galls and provided an important theoretical reference for eliminating the sugar source of RKNs and preventing root-knot nematode disease.

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Section: Sugar Delivery Of Tomato Root At the Early Stage After Rkns ...supporting

confidence: 63%

Sugar delivery at the tomato root and root galls after Meloidogyne incognita infestation

Sun,

Lian,

Yang

et al. 2024

BMC Plant Biol

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“…Rice is highly sensitive to dry conditions during germination and the early phases of seedling growth. Low water potential in the soil prevents seedling from absorbing water, reducing seedling vigor ( Kruthika and Jithesh, 2023 ; Székely et al., 2023 ). The effects of water deprivation stress include altered membrane transport, disruption of metabolic processes, decreased ATP synthesis, leading to aborted germination, or severe seedling growth reduction ( Batlang et al., 2013 ; Oladosu et al., 2019 ; Kota et al., 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Genotype-specific germination behavior induced by sustainable priming techniques in response to water deprivation stress in rice

Dueñas,

Pagano,

Calvio

et al. 2024

Front. Plant Sci.

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Water stress brought about by climate change is among the major global concerns threatening food security. Rice is an important staple food which requires high water resources. Being a semi-aquatic plant, rice is particularly susceptible to drought. The aim of this work was to develop techniques directed to promote rice resilience to water deprivation stress during germination by implementing specific seed priming treatments. Five popular Italian rice varieties were subjected to priming treatments using novel, sustainable solutions, like poly-gamma-glutamic acid (γ-PGA), denatured γ-PGA (dPGA), and iron (Fe) pulsing, alone or in combination. The effect of the developed priming methods was tested under optimal conditions as well as under water deprivation stress imposed by polyethylene glycol (PEG) treatments. The priming efficacy was phenotypically determined in terms of germination behavior by measuring a series of parameters (germinability, germination index, mean germination time, seed vigor index, root and shoot length, germination stress tolerance index). Biochemical analyses were carried out to measure the levels of iron uptake and accumulation of reactive oxygen species (ROS). Integrative data analyses revealed that the rice varieties exhibited a strong genotype- and treatment-specific germination behavior. PEG strongly inhibited germination while most of the priming treatments were able to rescue it in all varieties tested except for Unico, which can be defined as highly stress sensitive. Molecular events (DNA repair, antioxidant response, iron homeostasis) associated with the transition from seed to seedling were monitored in terms of changes in gene expression profiles in two varieties sensitive to water deprivation stress with different responses to priming. The investigated genes appeared to be differentially expressed in a genotype-, priming treatment-, stress- and stage-dependent manner. The proposed seed priming treatments can be envisioned as sustainable and versatile agricultural practices that could help in addressing the impact of climate challenges on the agri-food system.

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Rhizobacteria-priming improves common bean seeds germination under different abiotic stresses through improving hydrolysis and antioxidant enzymes kinetics parameters

Al Hijab,

Al-Hazmi,

Naguib

2024

Rhizosphere

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Morpho-physiological profiling of rice (Oryza sativa) genotypes at germination stage with contrasting tolerance to salinity stress

Cited by 3 publications

References 67 publications

Sugar delivery at the tomato root and root galls after Meloidogyne incognita infestation

Sugar delivery at the tomato root and root galls after Meloidogyne incognita infestation

Genotype-specific germination behavior induced by sustainable priming techniques in response to water deprivation stress in rice

Rhizobacteria-priming improves common bean seeds germination under different abiotic stresses through improving hydrolysis and antioxidant enzymes kinetics parameters

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