Morphological and physiological responses to cyclic drought in two contrasting genotypes of  Catalpa bungei

Zheng, Huifang; Zhang, Xin; Ma, Wenjun; Song, Junyu; Rahman, Siddiq Ur; Wang, Junhui; Zhang, Yi

doi:10.1016/j.envexpbot.2017.02.016

Cited by 57 publications

(42 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One possible explanation is that NSC loss leading to death ensued when photosynthesis had ceased (Mc-Dowell, 2011). Isohydric C. bungei tolerate drought by avoidance strategy: maintaining a constant midday leaf water potential under drought conditions, by reducing stomatal conductance as necessary to limit transpiration (Dong et al, 2013;Zheng et al, 2017). Photosynthesis ceases in plants suffering from severe drought due to stomatal limitation (Piper, 2011;Yang et al, 2014;Xu et al, 2015), which we observed in the present study (Fig.…”

Section: Discussionsupporting

confidence: 64%

Organ-level evaluation of the carbon starvation hypothesis in deciduous broad-leaved Catalpa bungei plants undergoing drought-induced mortality

Qiu¹,

Wang²,

Yan³

et al. 2018

Dendrobiology

Self Cite

View full text Add to dashboard Cite

The carbon starvation hypothesis (CSH) is one of the current leading hypotheses regarding the mechanism of plant death, although it has not been sufficiently validated due to a lack of evidence. To help verify the role of carbon starvation in plant mortality, we measured the non-structural carbohydrate (NSC) concentration ([NSC]) in different organs (roots, stems, and leaves) of plants of Catlapa bungei clone 9-1 after the cessation of photosynthesis and death due to drought and in well-watered controls. Drought induced the loss of NSC reserves, which was observed in all organs at death, and carbon starvation appeared to begin after the cessation of photosynthesis. The [NSC] dynamics, occurrence time of carbon starvation, and survival time varied among the organs, and even within the same organs at different stem heights. Overall, our findings are compatible with the CSH in that carbon starvation occurs in roots, stems, and leaves and concurs with plant death during prolonged drought.

show abstract

Section: Discussionsupporting

confidence: 64%

Organ-level evaluation of the carbon starvation hypothesis in deciduous broad-leaved Catalpa bungei plants undergoing drought-induced mortality

Qiu¹,

Wang²,

Yan³

et al. 2018

Dendrobiology

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, plants seldom grow under prolonged drought or salinity throughout their entire growth periods owing to sporadic precipitation and/or irrigation . Re‐watering may largely alleviate the damage induced by drought or salinity.…”

Section: Introductionmentioning

confidence: 99%

Shoot δ¹³C values as an indicator of cumulative stress: The role of re‐watering during drought and salinity stress

Sun

Liu

Zhang

et al. 2019

Rapid Comm Mass Spectrometry

View full text Add to dashboard Cite

Rationale:The carbon stable isotope composition (δ 13 C value) of a plant can reflect prolonged drought and salinity, as different isotopic signals resulting from drought and salinity can be retained in plant tissue. Commonly, drought and salinity are interrupted by intermittent precipitation or irrigation. It remains unclear whether the δ 13 C values reflect the cumulative duration of intermittent drought or salinity stress.Methods: Drought (5% and 10% polyethylene glycol) and salinity (35 mM and 85 mM NaCl) were imposed on annual ryegrass consistently or cyclically; throughout the treatments, the stress duration for cyclic drought/salinity was half that of the corresponding prolonged stress treatment. The shoot δ 13 C values were measured using isotope ratio mass spectrometry.Results: Prolonged drought restrained growth and increased shoot δ 13 C values relative to the control group. However, the shoot biomass was even lower under cyclic drought than under prolonged drought. Furthermore, the shoot δ 13 C value under cyclic drought was close to that of the control group. The low NaCl concentration treatment actually enhanced shoot growth. The shoot δ 13 C value varied with both duration and intensity of salinity across all groups. Conclusions:The shoot δ 13 C value in annual ryegrass did indicate cumulative stress from cyclic low salinity, but not that from cyclic drought, in a manner that was mediated by the effect of re-watering on the mass and allocation of the photosynthates produced during stress.

show abstract

“…Based on cyclic drought experiment using Catalpa bungei species, the accumulative functional effects of progressive drought and subsequent re-watering on plant growth, leaf and root parameters has been found as a useful adaptive mechanism to drought successive drought and subsequent rewatering (Zheng et al 2017). As recently reported by Abid et al (2016), the adaptability to drought, and recovery rate and capacity was closely associated with wheat cultivars.…”

Section: Introductionmentioning

confidence: 99%

“…As recently reported by Abid et al (2016), the adaptability to drought, and recovery rate and capacity was closely associated with wheat cultivars. The accumulation of effective metabolites such as sugars, and some amino acids like proline and leucine may exert an adaptive mechanism in response to the drought cyclic patterns (Meyer et al 2014; Foster et al 2015; Sun et al 2016; Zheng et al 2017). In plants of Lupinus albus , the new leaves can be produced more as quickly re-watered, although restoration of other metabolites (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the extent of compensation for the limitation of pre-drought by promoting plant growth as rewatering might determine the final plant biomass or crop yield, which may link to drought severity and its duration. Nevertheless, whether plant growth and physiological activities completely recovery following rewatering, what are the rate and degree of recovery, and the ability of the adaption to the drying-rewetting cycles might strongly depend on previous drought strength and persistent duration, species and genetic types, and drying-rewetting cycle patterns, which the underlying mechanism is elusive so far (Loewenstein & Pallardy 2002; Marron et al 2003; Flexas et al 2004; Yahdjian & Sala 2006; Xu et al 2009, 2010; Sun et al 2016; Zheng et al 2017). Thus, responses of plant growth and leaf functional processes to drought history and subsequent rewatering remain to be clarified further, particularly in situ crop field.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Maize leaf functional responses to drought episode and rewatering

Song

Zhou

et al. 2017

Preprint

View full text Add to dashboard Cite

AbstractEffects of crop growth and physiological activity to drought and irrigation regimes have been extensively studied; however, the responses of plant growth, morphological and photosynthetic behaviors to drought episodes and thereafter rewatering receive a less attention. This field experiment was carried out directly in situ at an agricultural ecosystem research station during 2015-2016, in a northeastern China, on the renowned northeastern maize production belt, where is being threatened by severe drought. A field automatic rain-shelter was used, and five irrigation regimes including control, four drought episodes, and rewatering treatments were established. The chlorophyll contents (SPAD values), light-saturated photosynthetic rate (Asat), and photosystem II actual quantum yield (ΦPSII), maximum quantum yield (Fv′/Fm′) decreased at lower leaf positions and with plant development. Episodic drought effects on plant growth, leaf morphological traits and photosynthetic processes at both vegetative and reproductive stages were severely remarked, particularly at late development stage and with longer drought duration. The recovery of leaf functional traits of the plants experienced historical-drought following re-irrigating was not fully restored to the level of the plants subjected to ample and normal water status; and the strength of recovery was proportional to the persistence of pre-drought episodes. The relationship of Asat with SPAD depends on water status and plant development. A principal component analysis can well denote the change patterns in responses to water status treatments with plant development. The results may give an insight into how to understand the maize traits’ responses to drought episode and rewatering, and this also might assist the drought-stricken crops to cope with future climatic change.

show abstract

Morphological and physiological responses to cyclic drought in two contrasting genotypes of Catalpa bungei

Cited by 57 publications

References 39 publications

Organ-level evaluation of the carbon starvation hypothesis in deciduous broad-leaved Catalpa bungei plants undergoing drought-induced mortality

Organ-level evaluation of the carbon starvation hypothesis in deciduous broad-leaved Catalpa bungei plants undergoing drought-induced mortality

Shoot δ¹³C values as an indicator of cumulative stress: The role of re‐watering during drought and salinity stress

Maize leaf functional responses to drought episode and rewatering

Contact Info

Product

Resources

About

Morphological and physiological responses to cyclic drought in two contrasting genotypes of Catalpa bungei

Cited by 57 publications

References 39 publications

Organ-level evaluation of the carbon starvation hypothesis in deciduous broad-leaved Catalpa bungei plants undergoing drought-induced mortality

Organ-level evaluation of the carbon starvation hypothesis in deciduous broad-leaved Catalpa bungei plants undergoing drought-induced mortality

Shoot δ13C values as an indicator of cumulative stress: The role of re‐watering during drought and salinity stress

Maize leaf functional responses to drought episode and rewatering

Contact Info

Product

Resources

About

Shoot δ¹³C values as an indicator of cumulative stress: The role of re‐watering during drought and salinity stress