Publication detail

Photosynthetic and Growth Responses of Arundo donax L. Plantlets Under Different Oxygen Deficiency Stresses and Reoxygenation

Pompeiano, A. Reyes, TH. Moles, TM. Guglielminetti, L. Scartazza, A.

Original Title

Photosynthetic and Growth Responses of Arundo donax L. Plantlets Under Different Oxygen Deficiency Stresses and Reoxygenation

Type

journal article in Web of Science

Language

English

Original Abstract

Promotion of nonfood species production to marginal, degraded lands abandoned by mainstream agriculture is affected by extremes of water availability (droughts and floods), which have increased in frequency and intensity and account for severe yield reduction. Arundo donax L., known as giant cane or giant reed, spontaneously grows in different kinds of environments with limitation to low temperature and is thus widespread in temperate and hot areas around the world. Moreover, this perennial rhizomatous grass has been recognized as a leading candidate crop in the Mediterranean for lignocellulosic feedstock due to its high C-3 photosynthetic capacity, positive energy balance and low agroecological management demand. In this study, the photosynthetic performance and growth response of A. donax to waterlogging and submergence stress following a time course as well as their respective re-oxygenation were analyzed under reproducible and controlled environment conditions. Results of growth response showed that biomass production was strongly conditioned by the availability of oxygen. In fact, only waterlogged plants showed similar growth capacity to those under control conditions, while plants under submergence resulted in a dramatic reduction of this trait. The simultaneous measurements of both gas exchanges and chlorophyll fluorescence highlighted an alteration of both stomatal and non-stomatal photosynthetic behaviors during a short/medium period of oxygen deprivation and re-oxygenation. Photosynthetic CO2 uptake was strictly related to a combination of stomatal and mesophyll diffusional constrains, depending on the severity of the treatment and exposure time. Conditions of waterlogging and hypoxia revealed a slight growth plasticity of the species in response to prolonged stress conditions, followed by a fast recovery upon reoxygenation. Moreover, the rapid restoration of physiological functions after O-2 deprivation testifies to the environmental plasticity of this species, although prolonged O-2 shortage proved detrimental to A. donax by hampering growth and photosynthetic CO2 uptake.

Keywords

anaerobiosis; chlorophyll fluorescence; giant reed; leaf gas exchange; stomatal conductance; mesophyll conductance

Authors

Pompeiano, A.; Reyes, TH.; Moles, TM.; Guglielminetti, L.; Scartazza, A.

Released

5. 4. 2019

Publisher

FRONTIERS MEDIA SA

Location

LAUSANNE

ISBN

1664-462X

Periodical

Frontiers in Plant Science

Year of study

10

Number

1

State

Swiss Confederation

Pages from

1

Pages to

12

Pages count

12

URL

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6459947/

BibTex

@article{BUT163601,
  author="Pompeiano, A. and Reyes, TH. and Moles, TM. and Guglielminetti, L. and Scartazza, A.",
  title="Photosynthetic and Growth Responses of Arundo donax L. Plantlets Under Different Oxygen Deficiency Stresses and Reoxygenation",
  journal="Frontiers in Plant Science",
  year="2019",
  volume="10",
  number="1",
  pages="1--12",
  doi="10.3389/fpls.2019.00408",
  issn="1664-462X",
  url="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6459947/"
}