Influence of arbuscular mycorrhizal fungi and treated wastewater on water relations and leaf structure alterations of Viburnum tinus L. plants during both saline and recovery periods

Gómez-Bellot, María José; Tortosa, Pedro Antonio Nortes; Ortuño, M.F.; Trigueros, Cristina Romero; Fernández‐García, Nieves; Sánchez-Blanco, María Jesús

doi:10.1016/j.jplph.2015.09.007

“…These alterations can protect and improve the P N performance in eugenia plants, especially in a situation of reduced stomatal aperture (Figure 1). Similar results were observed by Gómez-Bellot et al [107] in Viburnum tinus L. plants irrigated with treated wastewater. The leaf thickness of these plants increased due to an increase in the palisade parenchyma, thus maximising the photosynthesis potential in a saline situation.…”

Section: Leaf Anatomy and Ultrastructure Changes In Leaves Under Salisupporting

confidence: 90%

Plant Responses to Salt Stress: Adaptive Mechanisms

Acosta‐Motos

¹

,

Ortuño

²

,

Bernal‐Vicente

³

et al. 2017

View full text Add to dashboard Cite

This review deals with the adaptive mechanisms that plants can implement to cope with the challenge of salt stress. Plants tolerant to NaCl implement a series of adaptations to acclimate to salinity, including morphological, physiological and biochemical changes. These changes include increases in the root/canopy ratio and in the chlorophyll content in addition to changes in the leaf anatomy that ultimately lead to preventing leaf ion toxicity, thus maintaining the water status in order to limit water loss and protect the photosynthesis process. Furthermore, we deal with the effect of salt stress on photosynthesis and chlorophyll fluorescence and some of the mechanisms thought to protect the photosynthetic machinery, including the xanthophyll cycle, photorespiration pathway, and water-water cycle. Finally, we also provide an updated discussion on salt-induced oxidative stress at the subcellular level and its effect on the antioxidant machinery in both salt-tolerant and salt-sensitive plants. The aim is to extend our understanding of how salinity may affect the physiological characteristics of plants.

show abstract

“…These alterations can protect and improve the PN performance in eugenia plants, especially in a situation of reduced stomatal aperture ( Figure 1). Similar results were observed by Gómez-Bellot et al [99] in Viburnum tinus L. plants irrigated with treated wastewater. The leaf thickness of these plants increased due to an increase in the palisade parenchyma, thus maximising the photosynthesis potential in a saline situation.…”

Section: Leaf Anatomy and Ultrastructure Changes In Leaves Under Salisupporting

confidence: 90%

Plant Responses to Salt Stress: Adaptive Mechanisms

Acosta‐Motos¹,

Ortuño²,

Bernal‐Vicente³

et al. 2017

Preprint

View full text Add to dashboard Cite

This review deals with the adaptive mechanisms that plants can implement to cope with the challenge of salt stress. Plants tolerant to NaCl implement a series of adaptations to acclimate to salinity, including morphological, physiological and biochemical changes. These changes include increases in the root/canopy ratio and in the chlorophyll content in addition to changes in the leaf anatomy that ultimately lead to preventing leaf ion toxicity, thus maintaining the water status in order to limit water loss and protect the photosynthesis process. Furthermore, we deal with the effect of salt stress on photosynthesis and chlorophyll fluorescence and some of the mechanisms thought to protect the photosynthetic machinery, including the xanthophyll cycle, photorespiration pathway, and water-water cycle. Finally, we also provide an updated discussion on salt-induced oxidative stress at the subcellular level and its effect on the antioxidant machinery in both salt-tolerant and salt-sensitive plants. The aim is to extend our understanding of how salinity may affect the physiological characteristics of plants.

show abstract

“…However, the overall size and volume of the green biomass was lower for the saline treatments. To partly offset the effects of stress, salinity usually results in thicker leaves with a higher number of cells per unit area, as well as decreased cell size in plant leaves [95,96]. The increased pigment per leaf area has previously been attributed to decreasing leaf growth in response to salinity stress [97].…”

Section: Effect Of Stress On Pigment Content Per Unit Leaf Areamentioning

confidence: 99%

Response of Chlorophyll, Carotenoid and SPAD-502 Measurement to Salinity and Nutrient Stress in Wheat (Triticum aestivum L.)

Shah

¹

,

Houborg

²

,

McCabe

³

2017

View full text Add to dashboard Cite

Abiotic stress can alter key physiological constituents and functions in green plants. Improving the capacity to monitor this response in a non-destructive manner is of considerable interest, as it would offer a direct means of initiating timely corrective action. Given the vital role that plant pigments play in the photosynthetic process and general plant physiological condition, their accurate estimation would provide a means to monitor plant health and indirectly determine stress response. The aim of this work is to evaluate the response of leaf chlorophyll and carotenoid (C t ) content in wheat (Triticum aestivum L.) to changes in varying application levels of soil salinity and fertilizer applied over a complete growth cycle. The study also seeks to establish and analyze relationships between measurements from a SPAD-502 instrument and the leaf pigments, as extracted at the anthesis stage. A greenhouse pot experiment was conducted in triplicate by employing distinct treatments of both soil salinity and fertilizer dose at three levels. Results showed that higher doses of fertilizer increased the content of leaf pigments across all levels of soil salinity. Likewise, increasing the level of soil salinity significantly increased the chlorophyll and C t content per leaf area at all levels of applied fertilizer. However, as an adaptation process and defense mechanism under salinity stress, leaves were found to be thicker and narrower. Thus, on a per-plant basis, increasing salinity significantly reduced the chlorophyll (Chl t ) and C t produced under each fertilizer treatment. In addition, interaction effects of soil salinity and fertilizer application on the photosynthetic pigment content were found to be significant, as the higher amounts of fertilizer augmented the detrimental effects of salinity. A strong positive (R 2 = 0.93) and statistically significant (p < 0.001) relationship between SPAD-502 values and Chl t and between SPAD-502 values and C t content (R 2 = 0.85) was determined based on a large (n = 277) dataset. We demonstrate that the SPAD-502 readings and plant photosynthetic pigment content per-leaf area are profoundly affected by salinity and nutrient stress, but that the general form of their relationship remains largely unaffected by the stress. As such, a generalized regression model can be used for Chl t and C t estimation, even across a range of salinity and fertilizer gradients.

show abstract

Influence of arbuscular mycorrhizal fungi and treated wastewater on water relations and leaf structure alterations of Viburnum tinus L. plants during both saline and recovery periods

Cited by 32 publications

References 66 publications

Plant Responses to Salt Stress: Adaptive Mechanisms

Plant Responses to Salt Stress: Adaptive Mechanisms

Plant Responses to Salt Stress: Adaptive Mechanisms

Response of Chlorophyll, Carotenoid and SPAD-502 Measurement to Salinity and Nutrient Stress in Wheat (Triticum aestivum L.)

Contact Info

Product

Resources

About