Gene expression analysis in drought tolerant and susceptible black pepper (Piper nigrum L.) in response to water deficit stress

George, Kalpana; Malik, Neema; Kumar, I. P. Vijesh; Krishnamurthy, K. S.

doi:10.1007/s11738-017-2398-5

Cited by 22 publications

(11 citation statements)

References 49 publications

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“…Contrarily, after heat stress SOD and CAT activity decreased, partially confirming the data found in Corylus avellana pollen genotypes, in which HS reduced SOD and CAT activities [39]. Interestingly, also osmotin, a multifunctional protein that is overexpressed under stress conditions [40,41] and acts as an osmoprotectant, participates in the regulation of ROS level; the protein accumulates when pollen was stressed and continues to accumulate during recovery [42,43]. In our experimental setup, ROS content in S and PRS samples was lower than in P and PR samples, indicating that probably osmotin contributes to limit their concentration.…”

Section: Discussionsupporting

confidence: 74%

Insights into the Mechanisms of Heat Priming and Thermotolerance in Tobacco Pollen

Mareri

Faleri

Aloisi

et al. 2021

IJMS

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Global warming leads to a progressive rise in environmental temperature. Plants, as sessile organisms, are threatened by these changes; the male gametophyte is extremely sensitive to high temperature and its ability to preserve its physiological status under heat stress is known as acquired thermotolerance. This latter can be achieved by exposing plant to a sub-lethal temperature (priming) or to a progressive increase in temperature. The present research aims to investigate the effects of heat priming on the functioning of tobacco pollen grains. In addition to evaluating basic physiological parameters (e.g., pollen viability, germination and pollen tube length), several aspects related to a correct pollen functioning were considered. Calcium (Ca2+) level, reactive oxygen species (ROS) and related antioxidant systems were investigated, also to the organization of actin filaments and cytoskeletal protein such as tubulin (including tyrosinated and acetylated isoforms) and actin. We also focused on sucrose synthase (Sus), a key metabolic enzyme and on the content of main soluble sugars, including UDP-glucose. Results here obtained showed that a pre-exposure to sub-lethal temperatures can positively enhance pollen performance by altering its metabolism. This can have a considerable impact, especially from the point of view of breeding strategies aimed at improving crop species.

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Section: Discussionsupporting

confidence: 74%

Insights into the Mechanisms of Heat Priming and Thermotolerance in Tobacco Pollen

Mareri

Faleri

Aloisi

et al. 2021

IJMS

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“…For each trait under evaluation, the Ky coefficient shows a sharp drop in black pepper yield as a function of the applied water deficit (Figure 7). The angular coefficients of the fitted equations characterize response factors (Ky) of 2.41 (SHFW), 2.96 the crop (Penella and Calatayud, 2018), and once flowering begins, water must be made continuously available to the plants until the fruit ripens to avoid low yields; water restrictions are still in place for a few days during this period (Kandiannan et al, 2014;Krishnamurthy et al, 2011;George et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Yield response factor (Ky) and initial growth in black pepper in a tropical environment

Carvalho

Teles

Cruz³

et al. 2023

Sci. agric. (Piracicaba, Braz.)

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Black pepper is widely produced in Brazil, though there are few studies related to its water requirements and the effects of water deficit (WD) applied under tropical conditions.The growth, sensitivity to WD, and first-year productivity of irrigated plants from the Bragantina cultivar were evaluated, employing an irrigation system with automatic management. The plants were cultivated in plastic pots installed in the field for 391 days using emitters with different flow rates (2.2 [T1], 3.3 [T2], 4.3 [T3], and 5.3 L h -1 [T4 -control]). Fresh weight of the leaves, stems, and shoots, and dry weight of the leaves, stem, roots, and shoots as well as the total dry weight of the plant, were evaluated. Productivity was determined by evaluating the grains and spikes from a single harvest. Yield results and the actual versus maximum evapotranspiration rate for the entire growing season was used for calculating the Ky coefficient. Despite 1,346 mm of rainfall, the irrigation system was activated 165 times, distributing a mean volume of 19.0 (T1), 28.5 (T2), 37.1 (T3), and 45.8 L per plant (control). All traits were negatively affected by the WD, and the Ky values obtained (from 1.72 to 2.96) indicate the high sensitivity of black pepper to WD. In general, the spikes produced with at least 81 % of the crop water demand were larger and more numerous than those subjected to inferior treatments. WD occurring during the flowering stage severely hampers the size, weight, and quality of the spikes and grains of black pepper.

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“…It also acts as a protective agent for enzyme function and as a free radical scavenger [3]. Relative water content (RWC) is found to be better physiological characters for the characterization of drought /moisture stress tolerance [4].…”

Section: Introductionmentioning

confidence: 99%

Development of Screening Method for Moisture Deficit Tolerance of Black Pepper Genotypes

Alagupalamuthirsolai

Srinivasan

Sarathambal

et al. 2021

IJECC

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Black pepper is basically a rainfed crop in India. Drought is the chief abiotic stress causing up to 50-80% crop loss in black pepper. Lack of precise screening methodology to develop moisture stress tolerant lines is a limiting factor in black pepper productivity. To develop a rapid screening methodology, a laboratory experiment was conducted with rooted black pepper cuttings under hydroponic culture. The experiment was designed in a completely randomized with four replications. Moisture stress was imposed with six different concentrations of Polyethylene glycol-6000 (5, 8, 10, 12, 15 and 20 per cent) along with control in black pepper cv. Panniyur-1, IISR-Thevam, IISR-Sreekara and IISR-Girimunda. The results showed that Panniyur-1, IISR-Thevam, IISR-Sreekara and IISR-Girimunda at the PEG-6000 concentrations of 8%, 10%, 10%, 10% respectively reduced per cent cuttings survival almost by 50% Lethal dose (LD50) after 10 days of PEG stress and also, a signiﬁcant increase in proline was recorded up to 10% PEG-6000. Hence, 10% PEG-6000 appears to be an ideal concentration for screening black pepper genotypes for moisture stress tolerance.

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Gene expression analysis in drought tolerant and susceptible black pepper (Piper nigrum L.) in response to water deficit stress

Cited by 22 publications

References 49 publications

Insights into the Mechanisms of Heat Priming and Thermotolerance in Tobacco Pollen

Insights into the Mechanisms of Heat Priming and Thermotolerance in Tobacco Pollen

Yield response factor (Ky) and initial growth in black pepper in a tropical environment

Development of Screening Method for Moisture Deficit Tolerance of Black Pepper Genotypes

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