Uso de poliacrilamidas y el riego en el manejo hídrico de lechugas ( Lactuca sativa L.)

Nissen, Martin; Martin, Rodolfo

doi:10.4206/agrosur.2004.v32n2-01

Cited by 4 publications

(3 citation statements)

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“…This indicates that these variables were not importantly affected by the addition of the hydrophilic polymer. Although it has been shown that hydrophilic polymers are a beneficial practice to improve yield and fruit quality in a number of crops (Nissen and San Martín, 2004;Ezzat et al, 2011), in this study we did not find a positive effect of the polymer on fruit yield or quality in Anaheim cv. Cardón pepper.…”

Section: Resultscontrasting

confidence: 85%

Uso de un polímero hidrófilo en chile Anaheim (Capsicum annuum L.) bajo condiciones de invernadero

López-Elías¹,

et al. 2013

Idesia

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Section: Resultscontrasting

confidence: 85%

Uso de un polímero hidrófilo en chile Anaheim (Capsicum annuum L.) bajo condiciones de invernadero

López-Elías¹,

et al. 2013

Idesia

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“…We decided to use lettuce as a model crop to deeply the understanding about mechanisms and consequences of microorganisms to confer environmental tolerance in crops. This crop has been shown to be highly sensitive and dependent on water at all developmental stages (Sánchez, 2000; Molina-Montenegro et al, 2011), and demands constant watering to maintain high photosynthetic rates and a fresh biomass of high commercial value (Nissen and San martín, 2004). Complementarily, lettuce has also shown the ability to accept non-native microbial symbionts and moreover, to respond positively to these new partners (Molina-Montenegro et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

Antarctic Extremophiles: Biotechnological Alternative to Crop Productivity in Saline Soils

Acuña‐Rodríguez

Hansen

Gallardo-Cerda³

et al. 2019

Front. Bioeng. Biotechnol.

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Salinization of soils is one of the main sources of soil degradation worldwide, particularly in arid and semiarid ecosystems. High salinity results in osmotic stress and it can negatively impact plant grow and survival. Some plant species, however, can tolerate salinity by accumulating osmolytes like proline and maintaining low Na + concentrations inside the cells. Another mechanism of saline stress tolerance is the association with symbiotic microorganism, an alternative that can be used as a biotechnological tool in susceptible crops. From the immense diversity of plant symbionts, those found in extreme environments such as Antarctica seems to be the ones with most potential since they (and their host) evolved in harsh and stressful conditions. We evaluated the effect of the inoculation with a consortium of plant growth-promoting rhizobacteria (PGPB) and endosymbiotic fungi isolated from an Antarctic plant on saline stress tolerance in different crops. To test this we established 4 treatments: (i) uninoculated plants with no saline stress, (ii) uninoculated plants subjected to saline stress (200 mM NaCl), (iii) plants inoculated with the microorganism consortium with no saline stress, and (iv) inoculated plants subjected to saline stress. First, we assessed the effect of symbiont consortium on survival of four different crops (cayenne, lettuce, onion, and tomato) in order to obtain a more generalized response of this biological interaction. Second, in order to deeply the mechanisms involved in salt tolerance, in lettuce plants we measured the ecophysiological performance (F v /F m ) and lipid peroxidation to estimate the impact of saline stress on plants. We also measured proline accumulation and NHX1 antiporter gene expression (involved in Na + detoxification) to search for possible mechanism of stress tolerance. Additionally, root, shoot, and total biomass was also obtained as an indicator of productivity. Overall, plants inoculated with microorganisms from Antarctica increased the fitness related traits in several crops. In fact, three of four crops selected to assess the general response increased its survival under salt conditions compared with those uninoculated plants. On the other hand, saline stress negatively impacted all measured trait, but inoculated plants were significantly less affected. In control osmotic conditions, there were no differences in proline accumulation and lipid peroxidation between inoculation treatments. Interestingly, even in control salinity, F v /F m was higher in inoculated plants after 30 and 60 days. Under osmotic stress, F v /F m , proline accumulation and NHX1 expression was significantly higher and lipid peroxidation lower in inoculated plants compared to uninoculated individuals. Moreover, inoculated plants exposed to saline stress had a ...

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“…This crop has been shown to be highly dependent on water at all developmental stages, and demands constant watering to maintain high photosynthetic rates and a fresh biomass of high commercial value (Sánchez, 2000; Nissen and San Martín, 2004). Thus, this crop could be suitable to test the effect of Antarctic root-endophytes as a potential biotechnological solution to lessen the negative effects of water shortage on cultivated plants.…”

Section: Introductionmentioning

confidence: 99%

Root-endophytes improve the ecophysiological performance and production of an agricultural species under drought condition

et al. 2015

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Antarctic root-endophytes can improve the physiological tolerance and productivity of lettuce crops by means of several different physiological and molecular mechanisms, and could be a successful strategy to maximize water use efficiency and hence maintain an optimal yield in zones affected by desertification. Thus, application of antarctic root-endophytes to different crops could be a biotechnological tool for food security.

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Uso de poliacrilamidas y el riego en el manejo hídrico de lechugas ( Lactuca sativa L.)

Cited by 4 publications

References 0 publications

Uso de un polímero hidrófilo en chile Anaheim (Capsicum annuum L.) bajo condiciones de invernadero

Uso de un polímero hidrófilo en chile Anaheim (Capsicum annuum L.) bajo condiciones de invernadero

Antarctic Extremophiles: Biotechnological Alternative to Crop Productivity in Saline Soils

Root-endophytes improve the ecophysiological performance and production of an agricultural species under drought condition

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