Different physiological responses under drought stress result in different recovery abilities of two tropical woody evergreen species

Frosi, Gabriella; Harand, Wolfgang; Oliveira, Marciel T.; Pereira, Silvia; Cabral, Simone; Montenegro, Abelardo Antônio de Assunção; Santos, Mariana

doi:10.1590/0102-33062016abb0375

Cited by 23 publications

(9 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…as chlorophyll are the key components for carrying out light reactions of photosynthesis. These pigments are very fragile, and their ultrastructure and functioning are considerably impaired under stress situations including drought stress 83,84 . In the current experiment, total chlorophyll content was markedly reduced in the maize crop under water stress and P deficiency, but even more severe effect was observed when both stresses were combined.…”

Section: Effect Of Phosphorus Deficiency Water Stress and Their Combmentioning

confidence: 99%

Sulfur-enriched leonardite and humic acid soil amendments enhance tolerance to drought and phosphorus deficiency stress in maize (Zea mays L.)

Kaya

Şenbayram

Akram

et al. 2020

Sci Rep

105

View full text Add to dashboard Cite

Soil amendments are known to promote several plant growth parameters. In many agro-ecosystems, water scarcity and drought induced phosphorus deficiency limits crop yield significantly. Considering the climate change scenario, drought and related stress factors will be even more severe endangering the global food security. Therefore, two parallel field trials were conducted to examine at what extent soil amendment of leonardite and humic acid would affect drought and phosphorus tolerance of maize. The treatments were: control (C: 100% A pan and 125 kg P ha −1), P deficiency (phosphorus stress (PS): 62.5 kg P ha −1), water deficit stress (water stress (WS): 67% A pan), and PS + WS (67% A pan and 62.5 kg P ha −1). Three organic amendments were (i) no amendment, (ii) 625 kg S + 750 kg leonardite ha −1 and (iii) 1250 kg S + 37.5 kg humic acid ha −1) tested on stress treatments. Drought and p deficiency reduced plant biomass, grain yield, chlorophyll content, F v /F m , RWC and antioxidant activity (superoxide dismutase, peroxidase, and catalase), but increased electrolyte leakage and leaf H 2 o 2 in maize plants. The combined stress of drought and P deficiency decreased further related plant traits. Humic acid and leonardite enhanced leaf P and yield in maize plants under PS. A significant increase in related parameters was observed with humic acid and leonardite under WS. The largest increase in yield and plant traits in relation to humic acid and leonardite application was observed under combined stress situation. The use of sulfur-enriched amendments can be used effectively to maintain yield of maize crop in water limited calcareous soils. The global climate change simulations suggest fresh water availability will further deplete in many rainfed and irrigated agricultural areas 1 and thus, threatens food security 2. Although hydrological, meteorological and agricultural droughts occur simultaneously and are interrelated with each other, agricultural drought is believed to be the most common 3,4. Water stress causes a variety of responses from physiological to molecular in plants, allowing them to acclimate to harsh ecological conditions 5. Drought susceptibility of plants differs according to the plant species, stress level, and growth stages 6. Considerable yield gaps have been noticed in agricultural systems 7,8 and the availability of good quality water and mineral nutrients is critical for overcoming these yield gaps 9-11. This is principally reasonable for maize crop, one of the main cereals of the globe, covering 26% and 37% of the total cereal cultivated area and production, respectively 12. Maize is known as one of the highest water-requiring crops. Water deficiency imposed at any stage of its development can reduce grain yield significantly 13,14. As it is a fast-growing crop, its requirement for essential nutrients is also high and deficiency of any of the plant nutrients may lead to hamper growth and decrease yield 15. Maize is particularly susceptible to P deficiency, which can suppress growth and grain...

show abstract

Section: Effect Of Phosphorus Deficiency Water Stress and Their Combmentioning

confidence: 99%

Sulfur-enriched leonardite and humic acid soil amendments enhance tolerance to drought and phosphorus deficiency stress in maize (Zea mays L.)

Kaya

Şenbayram

Akram

et al. 2020

Sci Rep

105

View full text Add to dashboard Cite

show abstract

“…in which increased pigment concentrations were observed [60,61,62]. This increase may be related to the investment of the plant in adaptation mechanisms, in which the increase in chlorophyll content can promote a faster recovery of photosynthetic activity when the plant returns to non-stress conditions [63]. Pigment content is closely related to photosynthetic quality, and any change in chlorophyll and carotenoid content can affect photosynthesis and plant productivity [57].…”

Section: Resultsmentioning

confidence: 99%

Effects of iron toxicity on germination and initial growth of Carica papaya L.

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Several studies have shown that water availability in tropical dry forests is associated with changes in plant species composition (Segura et al, 2002;Esquivel-Muelbert et al, 2016;Hiltner et al, 2016) and the distribution of life-history traits (Gentry, 1982, Bullock, 1995Medina, 1995). Different responses in terms of species richness and abundance of specialized traits to elevated water stress can be explained by the physiological strategies of each species, which ensures the establishment of individuals along a drought stress gradient (Souza et al, 2010;Frosi et al, 2017). Indeed, some species of the Leguminosae, such as Trischidium mole (Leguminosae), are highly tolerant to water stress indicating that they may occur in highly desiccated soil patches (Souza et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Pachira aquatica (Malvaceae) (Frosi et al, 2017). Rapid rehydration may confer advantages related to faster regrowth after the dry season.…”

Section: Compared Tomentioning

confidence: 99%

Divergent responses of plant reproductive strategies to chronic anthropogenic disturbance and aridity in the Caatinga dry forest

Silva

Cruz‐Neto

Rito

et al. 2020

Science of The Total Environment

View full text Add to dashboard Cite

This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

show abstract

Different physiological responses under drought stress result in different recovery abilities of two tropical woody evergreen species

Cited by 23 publications

References 22 publications

Sulfur-enriched leonardite and humic acid soil amendments enhance tolerance to drought and phosphorus deficiency stress in maize (Zea mays L.)

Sulfur-enriched leonardite and humic acid soil amendments enhance tolerance to drought and phosphorus deficiency stress in maize (Zea mays L.)

Effects of iron toxicity on germination and initial growth of Carica papaya L.

Divergent responses of plant reproductive strategies to chronic anthropogenic disturbance and aridity in the Caatinga dry forest

Contact Info

Product

Resources

About